How do I populate the index number of a option value list with cheerio?

hi guys i am trying to get the index number of a list from a website using cheerio. for example the index number for "40 - only one left" is 2.

how would i go about getting the number 2 by having only '40' to match (without only one left)?

<option value="">Select Size</option>

<option value="2970"> 40 - only one left</option>

<option value="2973"> 41 - only one left</option>

<option value="2976"> 42 - only one left</option>

edited Jan 1 at 22:31

ibrahim mahrir

22.2k41951

asked Jan 1 at 22:27

Cheeky Lancc

add a comment |

hi guys i am trying to get the index number of a list from a website using cheerio. for example the index number for "40 - only one left" is 2.

how would i go about getting the number 2 by having only '40' to match (without only one left)?

<option value="">Select Size</option>

<option value="2970"> 40 - only one left</option>

<option value="2973"> 41 - only one left</option>

<option value="2976"> 42 - only one left</option>

edited Jan 1 at 22:31

ibrahim mahrir

22.2k41951

asked Jan 1 at 22:27

Cheeky Lancc

add a comment |

hi guys i am trying to get the index number of a list from a website using cheerio. for example the index number for "40 - only one left" is 2.

how would i go about getting the number 2 by having only '40' to match (without only one left)?

<option value="">Select Size</option>

<option value="2970"> 40 - only one left</option>

<option value="2973"> 41 - only one left</option>

<option value="2976"> 42 - only one left</option>

edited Jan 1 at 22:31

ibrahim mahrir

22.2k41951

asked Jan 1 at 22:27

Cheeky Lancc

hi guys i am trying to get the index number of a list from a website using cheerio. for example the index number for "40 - only one left" is 2.

how would i go about getting the number 2 by having only '40' to match (without only one left)?

<option value="">Select Size</option>

<option value="2970"> 40 - only one left</option>

<option value="2973"> 41 - only one left</option>

<option value="2976"> 42 - only one left</option>

javascript node.js cheerio

edited Jan 1 at 22:31

ibrahim mahrir

22.2k41951

asked Jan 1 at 22:27

Cheeky Lancc

edited Jan 1 at 22:31

ibrahim mahrir

22.2k41951

asked Jan 1 at 22:27

Cheeky Lancc

edited Jan 1 at 22:31

ibrahim mahrir

22.2k41951

edited Jan 1 at 22:31

ibrahim mahrir

22.2k41951

edited Jan 1 at 22:31

ibrahim mahrir

22.2k41951

asked Jan 1 at 22:27

Cheeky Lancc

asked Jan 1 at 22:27

Cheeky Lancc

asked Jan 1 at 22:27

Cheeky Lancc

add a comment |

2 Answers
2

active

oldest

votes

You can first select the <option> by text using the cheerio/jQuery selector :contains (the text could be anything), then call the function index to get its index inside its parent:

var index = $("option:contains('40')").index();

Note: The function index returns a 0-indexed result that starts from 0, if you want 1-indexed result, then simply add 1 to it.

Demo (using jQuery, which cheerio is based on):

var index = $("option:contains('40')").index();



console.log(index);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<select>

  <option value="">Select Size</option>

  <option value="2970"> 40 - only one left</option>

  <option value="2973"> 41 - only one left</option>

  <option value="2976"> 42 - only one left</option>

</select>

edited Jan 1 at 22:44

answered Jan 1 at 22:39

ibrahim mahrir

22.2k41951

add a comment |

You can try something like this:

function getindex(searchValue) {

    // you probably want to have a class for them OR pass an array of options 

    // to this function, because your html might have options in other places

    const inner = document.body.getElementsByTagName('option');

    for (let i = 0; i < inner.length; i++) {

        if (inner[i].innerHTML.includes(searchValue)) return i;

    }

    return 'no match'



}

 // remember that indexing starts at 0,

 // thus option 'Select Size' - is the first one with the index 0

 // and `40` - is the index 1

getindex('40'); // returns index 1

answered Jan 1 at 22:56

Uma

37615

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

You can first select the <option> by text using the cheerio/jQuery selector :contains (the text could be anything), then call the function index to get its index inside its parent:

var index = $("option:contains('40')").index();

Note: The function index returns a 0-indexed result that starts from 0, if you want 1-indexed result, then simply add 1 to it.

Demo (using jQuery, which cheerio is based on):

var index = $("option:contains('40')").index();



console.log(index);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<select>

  <option value="">Select Size</option>

  <option value="2970"> 40 - only one left</option>

  <option value="2973"> 41 - only one left</option>

  <option value="2976"> 42 - only one left</option>

</select>

edited Jan 1 at 22:44

answered Jan 1 at 22:39

ibrahim mahrir

22.2k41951

add a comment |

You can first select the <option> by text using the cheerio/jQuery selector :contains (the text could be anything), then call the function index to get its index inside its parent:

var index = $("option:contains('40')").index();

Note: The function index returns a 0-indexed result that starts from 0, if you want 1-indexed result, then simply add 1 to it.

Demo (using jQuery, which cheerio is based on):

var index = $("option:contains('40')").index();



console.log(index);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<select>

  <option value="">Select Size</option>

  <option value="2970"> 40 - only one left</option>

  <option value="2973"> 41 - only one left</option>

  <option value="2976"> 42 - only one left</option>

</select>

edited Jan 1 at 22:44

answered Jan 1 at 22:39

ibrahim mahrir

22.2k41951

add a comment |

You can first select the <option> by text using the cheerio/jQuery selector :contains (the text could be anything), then call the function index to get its index inside its parent:

var index = $("option:contains('40')").index();

Note: The function index returns a 0-indexed result that starts from 0, if you want 1-indexed result, then simply add 1 to it.

Demo (using jQuery, which cheerio is based on):

var index = $("option:contains('40')").index();



console.log(index);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<select>

  <option value="">Select Size</option>

  <option value="2970"> 40 - only one left</option>

  <option value="2973"> 41 - only one left</option>

  <option value="2976"> 42 - only one left</option>

</select>

edited Jan 1 at 22:44

answered Jan 1 at 22:39

ibrahim mahrir

22.2k41951

You can first select the <option> by text using the cheerio/jQuery selector :contains (the text could be anything), then call the function index to get its index inside its parent:

var index = $("option:contains('40')").index();

Note: The function index returns a 0-indexed result that starts from 0, if you want 1-indexed result, then simply add 1 to it.

Demo (using jQuery, which cheerio is based on):

var index = $("option:contains('40')").index();



console.log(index);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<select>

  <option value="">Select Size</option>

  <option value="2970"> 40 - only one left</option>

  <option value="2973"> 41 - only one left</option>

  <option value="2976"> 42 - only one left</option>

</select>

var index = $("option:contains('40')").index();



console.log(index);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<select>

  <option value="">Select Size</option>

  <option value="2970"> 40 - only one left</option>

  <option value="2973"> 41 - only one left</option>

  <option value="2976"> 42 - only one left</option>

</select>

var index = $("option:contains('40')").index();



console.log(index);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<select>

  <option value="">Select Size</option>

  <option value="2970"> 40 - only one left</option>

  <option value="2973"> 41 - only one left</option>

  <option value="2976"> 42 - only one left</option>

</select>

edited Jan 1 at 22:44

answered Jan 1 at 22:39

ibrahim mahrir

22.2k41951

edited Jan 1 at 22:44

answered Jan 1 at 22:39

ibrahim mahrir

22.2k41951

answered Jan 1 at 22:39

ibrahim mahrir

22.2k41951

answered Jan 1 at 22:39

ibrahim mahrir

22.2k41951

add a comment |

You can try something like this:

function getindex(searchValue) {

    // you probably want to have a class for them OR pass an array of options 

    // to this function, because your html might have options in other places

    const inner = document.body.getElementsByTagName('option');

    for (let i = 0; i < inner.length; i++) {

        if (inner[i].innerHTML.includes(searchValue)) return i;

    }

    return 'no match'



}

 // remember that indexing starts at 0,

 // thus option 'Select Size' - is the first one with the index 0

 // and `40` - is the index 1

getindex('40'); // returns index 1

answered Jan 1 at 22:56

Uma

37615

add a comment |

You can try something like this:

function getindex(searchValue) {

    // you probably want to have a class for them OR pass an array of options 

    // to this function, because your html might have options in other places

    const inner = document.body.getElementsByTagName('option');

    for (let i = 0; i < inner.length; i++) {

        if (inner[i].innerHTML.includes(searchValue)) return i;

    }

    return 'no match'



}

 // remember that indexing starts at 0,

 // thus option 'Select Size' - is the first one with the index 0

 // and `40` - is the index 1

getindex('40'); // returns index 1

answered Jan 1 at 22:56

Uma

37615

add a comment |

You can try something like this:

function getindex(searchValue) {

    // you probably want to have a class for them OR pass an array of options 

    // to this function, because your html might have options in other places

    const inner = document.body.getElementsByTagName('option');

    for (let i = 0; i < inner.length; i++) {

        if (inner[i].innerHTML.includes(searchValue)) return i;

    }

    return 'no match'



}

 // remember that indexing starts at 0,

 // thus option 'Select Size' - is the first one with the index 0

 // and `40` - is the index 1

getindex('40'); // returns index 1

answered Jan 1 at 22:56

Uma

37615

You can try something like this:

function getindex(searchValue) {

    // you probably want to have a class for them OR pass an array of options 

    // to this function, because your html might have options in other places

    const inner = document.body.getElementsByTagName('option');

    for (let i = 0; i < inner.length; i++) {

        if (inner[i].innerHTML.includes(searchValue)) return i;

    }

    return 'no match'



}

 // remember that indexing starts at 0,

 // thus option 'Select Size' - is the first one with the index 0

 // and `40` - is the index 1

getindex('40'); // returns index 1

answered Jan 1 at 22:56

Uma

37615

answered Jan 1 at 22:56

Uma

37615

answered Jan 1 at 22:56

Uma

37615

answered Jan 1 at 22:56

Uma

37615

add a comment |

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