[Vue warn]: Avoid using non-primitive value as key, use string/number value instead












1















I'm building a clone of HackerNews and am getting the following error:



vue.esm.js?efeb:591 [Vue warn]: Avoid using non-primitive value as key, use string/number value instead.

found in

---> <Single> at src/components/Single.vue
<App> at src/App.vue
<Root>


The error seems to be coming from Single.vue but I can't work what it is? The template is as follows:



<template>
<div class="container">
<h2>{{ story.title }}</h2>
<p>Score: {{ story.score }}</p>
<p>{{ story.url }}</p>
<div v-for="comment in comments" :key="comment">
<div class="comment-wrap">
<div class="comment-block">
<p class="comment-text">{{ comment.text }}</p>
<div class="bottom-comment">
<div class="comment-author">{{ comment.by }}</div>
<div class="comment-date">{{ comment.time }}</div>
</div>
</div>
</div>
</div>
</div>
</template>


If anyone out there can help, that would be great!?










share|improve this question



























    1















    I'm building a clone of HackerNews and am getting the following error:



    vue.esm.js?efeb:591 [Vue warn]: Avoid using non-primitive value as key, use string/number value instead.

    found in

    ---> <Single> at src/components/Single.vue
    <App> at src/App.vue
    <Root>


    The error seems to be coming from Single.vue but I can't work what it is? The template is as follows:



    <template>
    <div class="container">
    <h2>{{ story.title }}</h2>
    <p>Score: {{ story.score }}</p>
    <p>{{ story.url }}</p>
    <div v-for="comment in comments" :key="comment">
    <div class="comment-wrap">
    <div class="comment-block">
    <p class="comment-text">{{ comment.text }}</p>
    <div class="bottom-comment">
    <div class="comment-author">{{ comment.by }}</div>
    <div class="comment-date">{{ comment.time }}</div>
    </div>
    </div>
    </div>
    </div>
    </div>
    </template>


    If anyone out there can help, that would be great!?










    share|improve this question

























      1












      1








      1








      I'm building a clone of HackerNews and am getting the following error:



      vue.esm.js?efeb:591 [Vue warn]: Avoid using non-primitive value as key, use string/number value instead.

      found in

      ---> <Single> at src/components/Single.vue
      <App> at src/App.vue
      <Root>


      The error seems to be coming from Single.vue but I can't work what it is? The template is as follows:



      <template>
      <div class="container">
      <h2>{{ story.title }}</h2>
      <p>Score: {{ story.score }}</p>
      <p>{{ story.url }}</p>
      <div v-for="comment in comments" :key="comment">
      <div class="comment-wrap">
      <div class="comment-block">
      <p class="comment-text">{{ comment.text }}</p>
      <div class="bottom-comment">
      <div class="comment-author">{{ comment.by }}</div>
      <div class="comment-date">{{ comment.time }}</div>
      </div>
      </div>
      </div>
      </div>
      </div>
      </template>


      If anyone out there can help, that would be great!?










      share|improve this question














      I'm building a clone of HackerNews and am getting the following error:



      vue.esm.js?efeb:591 [Vue warn]: Avoid using non-primitive value as key, use string/number value instead.

      found in

      ---> <Single> at src/components/Single.vue
      <App> at src/App.vue
      <Root>


      The error seems to be coming from Single.vue but I can't work what it is? The template is as follows:



      <template>
      <div class="container">
      <h2>{{ story.title }}</h2>
      <p>Score: {{ story.score }}</p>
      <p>{{ story.url }}</p>
      <div v-for="comment in comments" :key="comment">
      <div class="comment-wrap">
      <div class="comment-block">
      <p class="comment-text">{{ comment.text }}</p>
      <div class="bottom-comment">
      <div class="comment-author">{{ comment.by }}</div>
      <div class="comment-date">{{ comment.time }}</div>
      </div>
      </div>
      </div>
      </div>
      </div>
      </template>


      If anyone out there can help, that would be great!?







      javascript vue.js






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 21 '18 at 20:33









      jnowebjnoweb

      3151411




      3151411
























          2 Answers
          2






          active

          oldest

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          1














          You can simply avoid the use of :key in your v-for.



          ...
          <div v-for="comment in comments">
          ...


          As vuejs documentation said:




          It is recommended to provide a key with v-for whenever possible, unless the
          iterated DOM content is simple, or you are intentionally relying on the
          default behavior for performance gains.







          share|improve this answer































            2














            The warning sources from <div v-for="comment in comments" :key="comment">, where the object comment is used as a key for v-for. The meaning of the warning is quite literal, don't use Object as key.



            Use unique primitive value as key, maybe something like comment.id or ${comment.time}${comment.by}






            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









              1














              You can simply avoid the use of :key in your v-for.



              ...
              <div v-for="comment in comments">
              ...


              As vuejs documentation said:




              It is recommended to provide a key with v-for whenever possible, unless the
              iterated DOM content is simple, or you are intentionally relying on the
              default behavior for performance gains.







              share|improve this answer




























                1














                You can simply avoid the use of :key in your v-for.



                ...
                <div v-for="comment in comments">
                ...


                As vuejs documentation said:




                It is recommended to provide a key with v-for whenever possible, unless the
                iterated DOM content is simple, or you are intentionally relying on the
                default behavior for performance gains.







                share|improve this answer


























                  1












                  1








                  1







                  You can simply avoid the use of :key in your v-for.



                  ...
                  <div v-for="comment in comments">
                  ...


                  As vuejs documentation said:




                  It is recommended to provide a key with v-for whenever possible, unless the
                  iterated DOM content is simple, or you are intentionally relying on the
                  default behavior for performance gains.







                  share|improve this answer













                  You can simply avoid the use of :key in your v-for.



                  ...
                  <div v-for="comment in comments">
                  ...


                  As vuejs documentation said:




                  It is recommended to provide a key with v-for whenever possible, unless the
                  iterated DOM content is simple, or you are intentionally relying on the
                  default behavior for performance gains.








                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 21 '18 at 20:40









                  jotadejotade

                  613




                  613

























                      2














                      The warning sources from <div v-for="comment in comments" :key="comment">, where the object comment is used as a key for v-for. The meaning of the warning is quite literal, don't use Object as key.



                      Use unique primitive value as key, maybe something like comment.id or ${comment.time}${comment.by}






                      share|improve this answer




























                        2














                        The warning sources from <div v-for="comment in comments" :key="comment">, where the object comment is used as a key for v-for. The meaning of the warning is quite literal, don't use Object as key.



                        Use unique primitive value as key, maybe something like comment.id or ${comment.time}${comment.by}






                        share|improve this answer


























                          2












                          2








                          2







                          The warning sources from <div v-for="comment in comments" :key="comment">, where the object comment is used as a key for v-for. The meaning of the warning is quite literal, don't use Object as key.



                          Use unique primitive value as key, maybe something like comment.id or ${comment.time}${comment.by}






                          share|improve this answer













                          The warning sources from <div v-for="comment in comments" :key="comment">, where the object comment is used as a key for v-for. The meaning of the warning is quite literal, don't use Object as key.



                          Use unique primitive value as key, maybe something like comment.id or ${comment.time}${comment.by}







                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered Nov 21 '18 at 20:37









                          William ChongWilliam Chong

                          919416




                          919416






























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