Vuejs build checkbox dynamically from array












0














I´m trying to build and checkbox from the setCheckbox method. The idea is to set dynamically the names to build the checkbox array.



<div id='example-3'>
<div v-for="(item, index) in names" :key="index">
<input type="checkbox" :id="item.name" v-model="item.checked">
<label :for="item.name">{{ item.name }}</label>
</div>
<span>Checked names: {{ checkedNames }}</span>
</div>


I removed the names array that supported the checkbox, in order to pass dynamically the new values.



new Vue({
el: '#example-3',
data() {
return {
names:
/* Below is how the names should receive the array to support the checkbox
[
{
name: '',
checked: false
}, {
name: '',
checked: false
}, {
name: '',
checked: false
}
]
*/
}
},
method: {
setCheckbox: function() {

var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

var regExp = /{([^}]*)}/g;

var matches = value.match(regExp);
var arrCheckbox = ;

for (var i = 0; i < matches.length; i++) {
var str = matches[i];
arrCheckbox.push(str);

// set the names in the array
const names = arrCheckbox
}
}
},
computed: {
checkedNames() {
return this.names.filter(item => item.checked).map(name => name.name)
}
},
})


Basically trying to pass array to names dynamically, method sets values require to build names.
https://jsfiddle.net/bernlt/aj6apozq/114/










share|improve this question





























    0














    I´m trying to build and checkbox from the setCheckbox method. The idea is to set dynamically the names to build the checkbox array.



    <div id='example-3'>
    <div v-for="(item, index) in names" :key="index">
    <input type="checkbox" :id="item.name" v-model="item.checked">
    <label :for="item.name">{{ item.name }}</label>
    </div>
    <span>Checked names: {{ checkedNames }}</span>
    </div>


    I removed the names array that supported the checkbox, in order to pass dynamically the new values.



    new Vue({
    el: '#example-3',
    data() {
    return {
    names:
    /* Below is how the names should receive the array to support the checkbox
    [
    {
    name: '',
    checked: false
    }, {
    name: '',
    checked: false
    }, {
    name: '',
    checked: false
    }
    ]
    */
    }
    },
    method: {
    setCheckbox: function() {

    var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

    var regExp = /{([^}]*)}/g;

    var matches = value.match(regExp);
    var arrCheckbox = ;

    for (var i = 0; i < matches.length; i++) {
    var str = matches[i];
    arrCheckbox.push(str);

    // set the names in the array
    const names = arrCheckbox
    }
    }
    },
    computed: {
    checkedNames() {
    return this.names.filter(item => item.checked).map(name => name.name)
    }
    },
    })


    Basically trying to pass array to names dynamically, method sets values require to build names.
    https://jsfiddle.net/bernlt/aj6apozq/114/










    share|improve this question



























      0












      0








      0







      I´m trying to build and checkbox from the setCheckbox method. The idea is to set dynamically the names to build the checkbox array.



      <div id='example-3'>
      <div v-for="(item, index) in names" :key="index">
      <input type="checkbox" :id="item.name" v-model="item.checked">
      <label :for="item.name">{{ item.name }}</label>
      </div>
      <span>Checked names: {{ checkedNames }}</span>
      </div>


      I removed the names array that supported the checkbox, in order to pass dynamically the new values.



      new Vue({
      el: '#example-3',
      data() {
      return {
      names:
      /* Below is how the names should receive the array to support the checkbox
      [
      {
      name: '',
      checked: false
      }, {
      name: '',
      checked: false
      }, {
      name: '',
      checked: false
      }
      ]
      */
      }
      },
      method: {
      setCheckbox: function() {

      var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

      var regExp = /{([^}]*)}/g;

      var matches = value.match(regExp);
      var arrCheckbox = ;

      for (var i = 0; i < matches.length; i++) {
      var str = matches[i];
      arrCheckbox.push(str);

      // set the names in the array
      const names = arrCheckbox
      }
      }
      },
      computed: {
      checkedNames() {
      return this.names.filter(item => item.checked).map(name => name.name)
      }
      },
      })


      Basically trying to pass array to names dynamically, method sets values require to build names.
      https://jsfiddle.net/bernlt/aj6apozq/114/










      share|improve this question















      I´m trying to build and checkbox from the setCheckbox method. The idea is to set dynamically the names to build the checkbox array.



      <div id='example-3'>
      <div v-for="(item, index) in names" :key="index">
      <input type="checkbox" :id="item.name" v-model="item.checked">
      <label :for="item.name">{{ item.name }}</label>
      </div>
      <span>Checked names: {{ checkedNames }}</span>
      </div>


      I removed the names array that supported the checkbox, in order to pass dynamically the new values.



      new Vue({
      el: '#example-3',
      data() {
      return {
      names:
      /* Below is how the names should receive the array to support the checkbox
      [
      {
      name: '',
      checked: false
      }, {
      name: '',
      checked: false
      }, {
      name: '',
      checked: false
      }
      ]
      */
      }
      },
      method: {
      setCheckbox: function() {

      var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

      var regExp = /{([^}]*)}/g;

      var matches = value.match(regExp);
      var arrCheckbox = ;

      for (var i = 0; i < matches.length; i++) {
      var str = matches[i];
      arrCheckbox.push(str);

      // set the names in the array
      const names = arrCheckbox
      }
      }
      },
      computed: {
      checkedNames() {
      return this.names.filter(item => item.checked).map(name => name.name)
      }
      },
      })


      Basically trying to pass array to names dynamically, method sets values require to build names.
      https://jsfiddle.net/bernlt/aj6apozq/114/







      javascript vue.js






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 19 '18 at 20:00









      ssc-hrep3

      5,18831553




      5,18831553










      asked Nov 19 '18 at 18:59









      bernltbernlt

      1916




      1916
























          2 Answers
          2






          active

          oldest

          votes


















          0














          You have several things you need to correct.




          1. You called the methods attribute method.


          2. You don't call the setCheckbox() while initializing the component. You need to do this in either created() or mounted(). If you want to dynamically watch the example string, you would also have to watch this string and the reset the names array.


          3. You don't save the names effectively. You just create a constant with the name names but you must assign it to the vue component (this).


          4. You pushed a string into the array (the name), but you actually wanted to push an object containing a string and a boolean.


          5. You could improve your code, if you split the logic of the loop and extracting the string from the checkbox view. You can do this by creating a component for the checkbox which is looped over multiple times. Then, you'd have a single state in a checkbox component with a name and a boolean.



          The first four things should be fixed now in this snippet (I did not run it):





          <div id='example-3'>
          <div v-for="(item, index) in names" :key="index">
          <input type="checkbox" :id="item.name" v-model="item.checked">
          <label :for="item.name">{{ item.name }}</label>
          </div>
          <span>Checked names: {{ checkedNames }}</span>
          </div>


          I removed the names array that supported the checkbox, in order to pass dynamically the new values.



          new Vue({
          el: '#example-3',
          data() {
          return {
          names:
          }
          },
          methods: {
          setCheckbox() {
          this.names = ;

          // you might want to extract this string and recall this function after it changes
          var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

          var regExp = /{([^}]*)}/g;
          var matches = value.match(regExp);

          for (var i = 0; i < matches.length; i++) {
          this.names.push({
          name: matches[i],
          checked: false
          });
          }
          }
          },
          computed: {
          checkedNames() {
          return this.names.filter(item => item.checked).map(name => name.name)
          }
          },
          created() {
          this.setCheckbox();
          }
          })





          share|improve this answer





























            0














            Several issues.




            • you're not calling setCheckbox()

            • several errors.


            Here's something closer to what you're looking for:



            new Vue({
            el: '#example-3',
            data() {
            return {
            names:
            }
            },
            methods: {
            setCheckbox: function() {

            var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

            var regExp = /{([^}]*)}/g;

            var matches = txt.match(regExp);
            var arrCheckbox = ;

            console.log(matches);
            for (var i = 0; i < matches.length; i++) {
            var str = matches[i].replace(/{(.*)}/, '$1');
            this.names.push({name: str, checked: false});
            }
            }
            },
            computed: {
            checkedNames() {
            return this.names.filter(item => item.checked).map(name => name.name)
            }
            },
            mounted() {
            this.setCheckbox();
            }
            })


            Here's a working fiddle: https://jsfiddle.net/jmbldwn/3Lrbw56s/8/






            share|improve this answer





















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              2 Answers
              2






              active

              oldest

              votes








              2 Answers
              2






              active

              oldest

              votes









              active

              oldest

              votes






              active

              oldest

              votes









              0














              You have several things you need to correct.




              1. You called the methods attribute method.


              2. You don't call the setCheckbox() while initializing the component. You need to do this in either created() or mounted(). If you want to dynamically watch the example string, you would also have to watch this string and the reset the names array.


              3. You don't save the names effectively. You just create a constant with the name names but you must assign it to the vue component (this).


              4. You pushed a string into the array (the name), but you actually wanted to push an object containing a string and a boolean.


              5. You could improve your code, if you split the logic of the loop and extracting the string from the checkbox view. You can do this by creating a component for the checkbox which is looped over multiple times. Then, you'd have a single state in a checkbox component with a name and a boolean.



              The first four things should be fixed now in this snippet (I did not run it):





              <div id='example-3'>
              <div v-for="(item, index) in names" :key="index">
              <input type="checkbox" :id="item.name" v-model="item.checked">
              <label :for="item.name">{{ item.name }}</label>
              </div>
              <span>Checked names: {{ checkedNames }}</span>
              </div>


              I removed the names array that supported the checkbox, in order to pass dynamically the new values.



              new Vue({
              el: '#example-3',
              data() {
              return {
              names:
              }
              },
              methods: {
              setCheckbox() {
              this.names = ;

              // you might want to extract this string and recall this function after it changes
              var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

              var regExp = /{([^}]*)}/g;
              var matches = value.match(regExp);

              for (var i = 0; i < matches.length; i++) {
              this.names.push({
              name: matches[i],
              checked: false
              });
              }
              }
              },
              computed: {
              checkedNames() {
              return this.names.filter(item => item.checked).map(name => name.name)
              }
              },
              created() {
              this.setCheckbox();
              }
              })





              share|improve this answer


























                0














                You have several things you need to correct.




                1. You called the methods attribute method.


                2. You don't call the setCheckbox() while initializing the component. You need to do this in either created() or mounted(). If you want to dynamically watch the example string, you would also have to watch this string and the reset the names array.


                3. You don't save the names effectively. You just create a constant with the name names but you must assign it to the vue component (this).


                4. You pushed a string into the array (the name), but you actually wanted to push an object containing a string and a boolean.


                5. You could improve your code, if you split the logic of the loop and extracting the string from the checkbox view. You can do this by creating a component for the checkbox which is looped over multiple times. Then, you'd have a single state in a checkbox component with a name and a boolean.



                The first four things should be fixed now in this snippet (I did not run it):





                <div id='example-3'>
                <div v-for="(item, index) in names" :key="index">
                <input type="checkbox" :id="item.name" v-model="item.checked">
                <label :for="item.name">{{ item.name }}</label>
                </div>
                <span>Checked names: {{ checkedNames }}</span>
                </div>


                I removed the names array that supported the checkbox, in order to pass dynamically the new values.



                new Vue({
                el: '#example-3',
                data() {
                return {
                names:
                }
                },
                methods: {
                setCheckbox() {
                this.names = ;

                // you might want to extract this string and recall this function after it changes
                var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

                var regExp = /{([^}]*)}/g;
                var matches = value.match(regExp);

                for (var i = 0; i < matches.length; i++) {
                this.names.push({
                name: matches[i],
                checked: false
                });
                }
                }
                },
                computed: {
                checkedNames() {
                return this.names.filter(item => item.checked).map(name => name.name)
                }
                },
                created() {
                this.setCheckbox();
                }
                })





                share|improve this answer
























                  0












                  0








                  0






                  You have several things you need to correct.




                  1. You called the methods attribute method.


                  2. You don't call the setCheckbox() while initializing the component. You need to do this in either created() or mounted(). If you want to dynamically watch the example string, you would also have to watch this string and the reset the names array.


                  3. You don't save the names effectively. You just create a constant with the name names but you must assign it to the vue component (this).


                  4. You pushed a string into the array (the name), but you actually wanted to push an object containing a string and a boolean.


                  5. You could improve your code, if you split the logic of the loop and extracting the string from the checkbox view. You can do this by creating a component for the checkbox which is looped over multiple times. Then, you'd have a single state in a checkbox component with a name and a boolean.



                  The first four things should be fixed now in this snippet (I did not run it):





                  <div id='example-3'>
                  <div v-for="(item, index) in names" :key="index">
                  <input type="checkbox" :id="item.name" v-model="item.checked">
                  <label :for="item.name">{{ item.name }}</label>
                  </div>
                  <span>Checked names: {{ checkedNames }}</span>
                  </div>


                  I removed the names array that supported the checkbox, in order to pass dynamically the new values.



                  new Vue({
                  el: '#example-3',
                  data() {
                  return {
                  names:
                  }
                  },
                  methods: {
                  setCheckbox() {
                  this.names = ;

                  // you might want to extract this string and recall this function after it changes
                  var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

                  var regExp = /{([^}]*)}/g;
                  var matches = value.match(regExp);

                  for (var i = 0; i < matches.length; i++) {
                  this.names.push({
                  name: matches[i],
                  checked: false
                  });
                  }
                  }
                  },
                  computed: {
                  checkedNames() {
                  return this.names.filter(item => item.checked).map(name => name.name)
                  }
                  },
                  created() {
                  this.setCheckbox();
                  }
                  })





                  share|improve this answer












                  You have several things you need to correct.




                  1. You called the methods attribute method.


                  2. You don't call the setCheckbox() while initializing the component. You need to do this in either created() or mounted(). If you want to dynamically watch the example string, you would also have to watch this string and the reset the names array.


                  3. You don't save the names effectively. You just create a constant with the name names but you must assign it to the vue component (this).


                  4. You pushed a string into the array (the name), but you actually wanted to push an object containing a string and a boolean.


                  5. You could improve your code, if you split the logic of the loop and extracting the string from the checkbox view. You can do this by creating a component for the checkbox which is looped over multiple times. Then, you'd have a single state in a checkbox component with a name and a boolean.



                  The first four things should be fixed now in this snippet (I did not run it):





                  <div id='example-3'>
                  <div v-for="(item, index) in names" :key="index">
                  <input type="checkbox" :id="item.name" v-model="item.checked">
                  <label :for="item.name">{{ item.name }}</label>
                  </div>
                  <span>Checked names: {{ checkedNames }}</span>
                  </div>


                  I removed the names array that supported the checkbox, in order to pass dynamically the new values.



                  new Vue({
                  el: '#example-3',
                  data() {
                  return {
                  names:
                  }
                  },
                  methods: {
                  setCheckbox() {
                  this.names = ;

                  // you might want to extract this string and recall this function after it changes
                  var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

                  var regExp = /{([^}]*)}/g;
                  var matches = value.match(regExp);

                  for (var i = 0; i < matches.length; i++) {
                  this.names.push({
                  name: matches[i],
                  checked: false
                  });
                  }
                  }
                  },
                  computed: {
                  checkedNames() {
                  return this.names.filter(item => item.checked).map(name => name.name)
                  }
                  },
                  created() {
                  this.setCheckbox();
                  }
                  })






                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 19 '18 at 20:17









                  ssc-hrep3ssc-hrep3

                  5,18831553




                  5,18831553

























                      0














                      Several issues.




                      • you're not calling setCheckbox()

                      • several errors.


                      Here's something closer to what you're looking for:



                      new Vue({
                      el: '#example-3',
                      data() {
                      return {
                      names:
                      }
                      },
                      methods: {
                      setCheckbox: function() {

                      var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

                      var regExp = /{([^}]*)}/g;

                      var matches = txt.match(regExp);
                      var arrCheckbox = ;

                      console.log(matches);
                      for (var i = 0; i < matches.length; i++) {
                      var str = matches[i].replace(/{(.*)}/, '$1');
                      this.names.push({name: str, checked: false});
                      }
                      }
                      },
                      computed: {
                      checkedNames() {
                      return this.names.filter(item => item.checked).map(name => name.name)
                      }
                      },
                      mounted() {
                      this.setCheckbox();
                      }
                      })


                      Here's a working fiddle: https://jsfiddle.net/jmbldwn/3Lrbw56s/8/






                      share|improve this answer


























                        0














                        Several issues.




                        • you're not calling setCheckbox()

                        • several errors.


                        Here's something closer to what you're looking for:



                        new Vue({
                        el: '#example-3',
                        data() {
                        return {
                        names:
                        }
                        },
                        methods: {
                        setCheckbox: function() {

                        var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

                        var regExp = /{([^}]*)}/g;

                        var matches = txt.match(regExp);
                        var arrCheckbox = ;

                        console.log(matches);
                        for (var i = 0; i < matches.length; i++) {
                        var str = matches[i].replace(/{(.*)}/, '$1');
                        this.names.push({name: str, checked: false});
                        }
                        }
                        },
                        computed: {
                        checkedNames() {
                        return this.names.filter(item => item.checked).map(name => name.name)
                        }
                        },
                        mounted() {
                        this.setCheckbox();
                        }
                        })


                        Here's a working fiddle: https://jsfiddle.net/jmbldwn/3Lrbw56s/8/






                        share|improve this answer
























                          0












                          0








                          0






                          Several issues.




                          • you're not calling setCheckbox()

                          • several errors.


                          Here's something closer to what you're looking for:



                          new Vue({
                          el: '#example-3',
                          data() {
                          return {
                          names:
                          }
                          },
                          methods: {
                          setCheckbox: function() {

                          var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

                          var regExp = /{([^}]*)}/g;

                          var matches = txt.match(regExp);
                          var arrCheckbox = ;

                          console.log(matches);
                          for (var i = 0; i < matches.length; i++) {
                          var str = matches[i].replace(/{(.*)}/, '$1');
                          this.names.push({name: str, checked: false});
                          }
                          }
                          },
                          computed: {
                          checkedNames() {
                          return this.names.filter(item => item.checked).map(name => name.name)
                          }
                          },
                          mounted() {
                          this.setCheckbox();
                          }
                          })


                          Here's a working fiddle: https://jsfiddle.net/jmbldwn/3Lrbw56s/8/






                          share|improve this answer












                          Several issues.




                          • you're not calling setCheckbox()

                          • several errors.


                          Here's something closer to what you're looking for:



                          new Vue({
                          el: '#example-3',
                          data() {
                          return {
                          names:
                          }
                          },
                          methods: {
                          setCheckbox: function() {

                          var txt = "These arethe names for checkbox {Rob} is 20, {Carlos} is 22 and {Mike} is 19."

                          var regExp = /{([^}]*)}/g;

                          var matches = txt.match(regExp);
                          var arrCheckbox = ;

                          console.log(matches);
                          for (var i = 0; i < matches.length; i++) {
                          var str = matches[i].replace(/{(.*)}/, '$1');
                          this.names.push({name: str, checked: false});
                          }
                          }
                          },
                          computed: {
                          checkedNames() {
                          return this.names.filter(item => item.checked).map(name => name.name)
                          }
                          },
                          mounted() {
                          this.setCheckbox();
                          }
                          })


                          Here's a working fiddle: https://jsfiddle.net/jmbldwn/3Lrbw56s/8/







                          share|improve this answer












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                          answered Nov 19 '18 at 20:20









                          Jim B.Jim B.

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