Vue string matching in handlebars {{myString !== “” ? myString : otherString}}











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1
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{{myString !== "" ? myString : otherString}} is currently printing myString which is an empty string



What is wrong with my comparator? I also tried using single quotes



The reason I ask this seemingly basic question is because the Vue documentation on handlebars doesn't seem to cover this, aside from letting me know that general javascript is available, I thought this comparator was general javascript for strings










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  • i tried your example by setting myString:"" and otherString:"test" and i set {{myString !== "" ? myString : otherString}} in my template which prints test, i think you have an issue somewhere else
    – Boussadjra Brahim
    Nov 10 at 23:05






  • 1




    Does myString.trim() !== "" perhaps have an effect on the output? Can myString be null or undefined instead of ""?
    – Jonathan Lonowski
    Nov 10 at 23:10












  • @JonathanLonowski yes it can. The model says myString should be a string but the mongodb object may not have that key, currently
    – CQM
    Nov 11 at 2:23










  • @JonathanLonowski the answer was just using if(value) so therefore {{ myString ? ... : ... }}
    – CQM
    Nov 11 at 5:12















up vote
1
down vote

favorite












{{myString !== "" ? myString : otherString}} is currently printing myString which is an empty string



What is wrong with my comparator? I also tried using single quotes



The reason I ask this seemingly basic question is because the Vue documentation on handlebars doesn't seem to cover this, aside from letting me know that general javascript is available, I thought this comparator was general javascript for strings










share|improve this question






















  • i tried your example by setting myString:"" and otherString:"test" and i set {{myString !== "" ? myString : otherString}} in my template which prints test, i think you have an issue somewhere else
    – Boussadjra Brahim
    Nov 10 at 23:05






  • 1




    Does myString.trim() !== "" perhaps have an effect on the output? Can myString be null or undefined instead of ""?
    – Jonathan Lonowski
    Nov 10 at 23:10












  • @JonathanLonowski yes it can. The model says myString should be a string but the mongodb object may not have that key, currently
    – CQM
    Nov 11 at 2:23










  • @JonathanLonowski the answer was just using if(value) so therefore {{ myString ? ... : ... }}
    – CQM
    Nov 11 at 5:12













up vote
1
down vote

favorite









up vote
1
down vote

favorite











{{myString !== "" ? myString : otherString}} is currently printing myString which is an empty string



What is wrong with my comparator? I also tried using single quotes



The reason I ask this seemingly basic question is because the Vue documentation on handlebars doesn't seem to cover this, aside from letting me know that general javascript is available, I thought this comparator was general javascript for strings










share|improve this question













{{myString !== "" ? myString : otherString}} is currently printing myString which is an empty string



What is wrong with my comparator? I also tried using single quotes



The reason I ask this seemingly basic question is because the Vue documentation on handlebars doesn't seem to cover this, aside from letting me know that general javascript is available, I thought this comparator was general javascript for strings







javascript string vue.js comparator






share|improve this question













share|improve this question











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asked Nov 10 at 22:57









CQM

14.1k60191330




14.1k60191330












  • i tried your example by setting myString:"" and otherString:"test" and i set {{myString !== "" ? myString : otherString}} in my template which prints test, i think you have an issue somewhere else
    – Boussadjra Brahim
    Nov 10 at 23:05






  • 1




    Does myString.trim() !== "" perhaps have an effect on the output? Can myString be null or undefined instead of ""?
    – Jonathan Lonowski
    Nov 10 at 23:10












  • @JonathanLonowski yes it can. The model says myString should be a string but the mongodb object may not have that key, currently
    – CQM
    Nov 11 at 2:23










  • @JonathanLonowski the answer was just using if(value) so therefore {{ myString ? ... : ... }}
    – CQM
    Nov 11 at 5:12


















  • i tried your example by setting myString:"" and otherString:"test" and i set {{myString !== "" ? myString : otherString}} in my template which prints test, i think you have an issue somewhere else
    – Boussadjra Brahim
    Nov 10 at 23:05






  • 1




    Does myString.trim() !== "" perhaps have an effect on the output? Can myString be null or undefined instead of ""?
    – Jonathan Lonowski
    Nov 10 at 23:10












  • @JonathanLonowski yes it can. The model says myString should be a string but the mongodb object may not have that key, currently
    – CQM
    Nov 11 at 2:23










  • @JonathanLonowski the answer was just using if(value) so therefore {{ myString ? ... : ... }}
    – CQM
    Nov 11 at 5:12
















i tried your example by setting myString:"" and otherString:"test" and i set {{myString !== "" ? myString : otherString}} in my template which prints test, i think you have an issue somewhere else
– Boussadjra Brahim
Nov 10 at 23:05




i tried your example by setting myString:"" and otherString:"test" and i set {{myString !== "" ? myString : otherString}} in my template which prints test, i think you have an issue somewhere else
– Boussadjra Brahim
Nov 10 at 23:05




1




1




Does myString.trim() !== "" perhaps have an effect on the output? Can myString be null or undefined instead of ""?
– Jonathan Lonowski
Nov 10 at 23:10






Does myString.trim() !== "" perhaps have an effect on the output? Can myString be null or undefined instead of ""?
– Jonathan Lonowski
Nov 10 at 23:10














@JonathanLonowski yes it can. The model says myString should be a string but the mongodb object may not have that key, currently
– CQM
Nov 11 at 2:23




@JonathanLonowski yes it can. The model says myString should be a string but the mongodb object may not have that key, currently
– CQM
Nov 11 at 2:23












@JonathanLonowski the answer was just using if(value) so therefore {{ myString ? ... : ... }}
– CQM
Nov 11 at 5:12




@JonathanLonowski the answer was just using if(value) so therefore {{ myString ? ... : ... }}
– CQM
Nov 11 at 5:12












2 Answers
2






active

oldest

votes

















up vote
0
down vote













The ternary operator works fine on the template.
Check your myString data it might not be empty.



  <div>Empty: {{myString === "" ? 'test' : otherString}}<div>
<div>Non Empty: {{myString !== "" ? 'test' : otherString}}<div>


See the example below.






var app = new Vue({
el: '#app',
data() {
return {
myString: "",
otherString: "blah"
}
},
})

<script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
<div id="app">
<div>Empty: {{myString === "" ? 'test' : otherString}}<div>
<div>Non Empty: {{myString !== "" ? 'test' : otherString}}<div>

</div>








share|improve this answer




























    up vote
    0
    down vote



    accepted










    if(value) was the answer here, to cover all the conditions I needed



    so {{ myString ? ... : ... }}






    share|improve this answer





















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      2 Answers
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      2 Answers
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      active

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      up vote
      0
      down vote













      The ternary operator works fine on the template.
      Check your myString data it might not be empty.



        <div>Empty: {{myString === "" ? 'test' : otherString}}<div>
      <div>Non Empty: {{myString !== "" ? 'test' : otherString}}<div>


      See the example below.






      var app = new Vue({
      el: '#app',
      data() {
      return {
      myString: "",
      otherString: "blah"
      }
      },
      })

      <script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
      <div id="app">
      <div>Empty: {{myString === "" ? 'test' : otherString}}<div>
      <div>Non Empty: {{myString !== "" ? 'test' : otherString}}<div>

      </div>








      share|improve this answer

























        up vote
        0
        down vote













        The ternary operator works fine on the template.
        Check your myString data it might not be empty.



          <div>Empty: {{myString === "" ? 'test' : otherString}}<div>
        <div>Non Empty: {{myString !== "" ? 'test' : otherString}}<div>


        See the example below.






        var app = new Vue({
        el: '#app',
        data() {
        return {
        myString: "",
        otherString: "blah"
        }
        },
        })

        <script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
        <div id="app">
        <div>Empty: {{myString === "" ? 'test' : otherString}}<div>
        <div>Non Empty: {{myString !== "" ? 'test' : otherString}}<div>

        </div>








        share|improve this answer























          up vote
          0
          down vote










          up vote
          0
          down vote









          The ternary operator works fine on the template.
          Check your myString data it might not be empty.



            <div>Empty: {{myString === "" ? 'test' : otherString}}<div>
          <div>Non Empty: {{myString !== "" ? 'test' : otherString}}<div>


          See the example below.






          var app = new Vue({
          el: '#app',
          data() {
          return {
          myString: "",
          otherString: "blah"
          }
          },
          })

          <script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
          <div id="app">
          <div>Empty: {{myString === "" ? 'test' : otherString}}<div>
          <div>Non Empty: {{myString !== "" ? 'test' : otherString}}<div>

          </div>








          share|improve this answer












          The ternary operator works fine on the template.
          Check your myString data it might not be empty.



            <div>Empty: {{myString === "" ? 'test' : otherString}}<div>
          <div>Non Empty: {{myString !== "" ? 'test' : otherString}}<div>


          See the example below.






          var app = new Vue({
          el: '#app',
          data() {
          return {
          myString: "",
          otherString: "blah"
          }
          },
          })

          <script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
          <div id="app">
          <div>Empty: {{myString === "" ? 'test' : otherString}}<div>
          <div>Non Empty: {{myString !== "" ? 'test' : otherString}}<div>

          </div>








          var app = new Vue({
          el: '#app',
          data() {
          return {
          myString: "",
          otherString: "blah"
          }
          },
          })

          <script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
          <div id="app">
          <div>Empty: {{myString === "" ? 'test' : otherString}}<div>
          <div>Non Empty: {{myString !== "" ? 'test' : otherString}}<div>

          </div>





          var app = new Vue({
          el: '#app',
          data() {
          return {
          myString: "",
          otherString: "blah"
          }
          },
          })

          <script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
          <div id="app">
          <div>Empty: {{myString === "" ? 'test' : otherString}}<div>
          <div>Non Empty: {{myString !== "" ? 'test' : otherString}}<div>

          </div>






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 11 at 4:52









          cal_br_mar

          51126




          51126
























              up vote
              0
              down vote



              accepted










              if(value) was the answer here, to cover all the conditions I needed



              so {{ myString ? ... : ... }}






              share|improve this answer

























                up vote
                0
                down vote



                accepted










                if(value) was the answer here, to cover all the conditions I needed



                so {{ myString ? ... : ... }}






                share|improve this answer























                  up vote
                  0
                  down vote



                  accepted







                  up vote
                  0
                  down vote



                  accepted






                  if(value) was the answer here, to cover all the conditions I needed



                  so {{ myString ? ... : ... }}






                  share|improve this answer












                  if(value) was the answer here, to cover all the conditions I needed



                  so {{ myString ? ... : ... }}







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 11 at 6:02









                  CQM

                  14.1k60191330




                  14.1k60191330






























                       

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