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










1















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 '18 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 '18 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 '18 at 2:23











  • @JonathanLonowski the answer was just using if(value) so therefore myString ? ... : ...

    – CQM
    Nov 11 '18 at 5:12















1















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 '18 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 '18 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 '18 at 2:23











  • @JonathanLonowski the answer was just using if(value) so therefore myString ? ... : ...

    – CQM
    Nov 11 '18 at 5:12













1












1








1








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











share|improve this question




share|improve this question










asked Nov 10 '18 at 22:57









CQMCQM

14.3k60193332




14.3k60193332












  • 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 '18 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 '18 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 '18 at 2:23











  • @JonathanLonowski the answer was just using if(value) so therefore myString ? ... : ...

    – CQM
    Nov 11 '18 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 '18 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 '18 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 '18 at 2:23











  • @JonathanLonowski the answer was just using if(value) so therefore myString ? ... : ...

    – CQM
    Nov 11 '18 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 '18 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 '18 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 '18 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 '18 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 '18 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 '18 at 2:23













@JonathanLonowski the answer was just using if(value) so therefore myString ? ... : ...

– CQM
Nov 11 '18 at 5:12





@JonathanLonowski the answer was just using if(value) so therefore myString ? ... : ...

– CQM
Nov 11 '18 at 5:12












2 Answers
2






active

oldest

votes


















0














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






























    0














    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
      2






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      2 Answers
      2






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      0














      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



























        0














        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

























          0












          0








          0







          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 '18 at 4:52









          cal_br_marcal_br_mar

          62138




          62138























              0














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



              so myString ? ... : ...






              share|improve this answer



























                0














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



                so myString ? ... : ...






                share|improve this answer

























                  0












                  0








                  0







                  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 '18 at 6:02









                  CQMCQM

                  14.3k60193332




                  14.3k60193332



























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