How to clear the filename and value of apex:inputFile












3














I have and apex:inputFile tag where a user can input a filename to upload on a visualforce page. I have a javascript function which checks and alerts if a filesize is too large. After the Alert the inputfield stays filled with the file. How do I clear the input in javascript.



Visualforce



<apex:inputFile id="inputfile" value="{!newAtt.body}" filename="{!newAtt.name}"  onchange="checkFileSize(event)" />


Javascript



    <script>
function checkFileSize(event) {
if(event.target.files[0].size > 2**20*5) {
alert('File must be less than 5Mb');
//**Clear input**
}
}
</script>









share|improve this question



























    3














    I have and apex:inputFile tag where a user can input a filename to upload on a visualforce page. I have a javascript function which checks and alerts if a filesize is too large. After the Alert the inputfield stays filled with the file. How do I clear the input in javascript.



    Visualforce



    <apex:inputFile id="inputfile" value="{!newAtt.body}" filename="{!newAtt.name}"  onchange="checkFileSize(event)" />


    Javascript



        <script>
    function checkFileSize(event) {
    if(event.target.files[0].size > 2**20*5) {
    alert('File must be less than 5Mb');
    //**Clear input**
    }
    }
    </script>









    share|improve this question

























      3












      3








      3







      I have and apex:inputFile tag where a user can input a filename to upload on a visualforce page. I have a javascript function which checks and alerts if a filesize is too large. After the Alert the inputfield stays filled with the file. How do I clear the input in javascript.



      Visualforce



      <apex:inputFile id="inputfile" value="{!newAtt.body}" filename="{!newAtt.name}"  onchange="checkFileSize(event)" />


      Javascript



          <script>
      function checkFileSize(event) {
      if(event.target.files[0].size > 2**20*5) {
      alert('File must be less than 5Mb');
      //**Clear input**
      }
      }
      </script>









      share|improve this question













      I have and apex:inputFile tag where a user can input a filename to upload on a visualforce page. I have a javascript function which checks and alerts if a filesize is too large. After the Alert the inputfield stays filled with the file. How do I clear the input in javascript.



      Visualforce



      <apex:inputFile id="inputfile" value="{!newAtt.body}" filename="{!newAtt.name}"  onchange="checkFileSize(event)" />


      Javascript



          <script>
      function checkFileSize(event) {
      if(event.target.files[0].size > 2**20*5) {
      alert('File must be less than 5Mb');
      //**Clear input**
      }
      }
      </script>






      visualforce javascript event inputfield






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 1 hour ago









      Thomas

      657213




      657213






















          1 Answer
          1






          active

          oldest

          votes


















          3














          You can pass the element id in the checkFileSize method, and then do your processing then



          <apex:page controller="FileUploadController">

          <apex:inputFile id="inputfile" value="{!newAtt.body}" filename="{!newAtt.name}" onchange="checkFileSize(event,id)" />

          <script>
          function checkFileSize(event , id ) {
          if(event.target.files[0].size > 2**20*5) {
          alert('File must be less than 5Mb');
          //**Clear input**
          document.getElementById(id).value ='';
          }
          }
          </script>
          </apex:page>





          share|improve this answer























          • Thanks for your answer, how can I make this work if the apex:input is between an apex repeat. For now it only works for the first input. How do I get the event inputfile?
            – Thomas
            58 mins ago












          • @Thomas updated code to support apex:reperat7
            – Pranay Jaiswal
            53 mins ago










          • Thanks!!! This made ik work.
            – Thomas
            44 mins ago











          Your Answer








          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "459"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: false,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: null,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsalesforce.stackexchange.com%2fquestions%2f245072%2fhow-to-clear-the-filename-and-value-of-apexinputfile%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          3














          You can pass the element id in the checkFileSize method, and then do your processing then



          <apex:page controller="FileUploadController">

          <apex:inputFile id="inputfile" value="{!newAtt.body}" filename="{!newAtt.name}" onchange="checkFileSize(event,id)" />

          <script>
          function checkFileSize(event , id ) {
          if(event.target.files[0].size > 2**20*5) {
          alert('File must be less than 5Mb');
          //**Clear input**
          document.getElementById(id).value ='';
          }
          }
          </script>
          </apex:page>





          share|improve this answer























          • Thanks for your answer, how can I make this work if the apex:input is between an apex repeat. For now it only works for the first input. How do I get the event inputfile?
            – Thomas
            58 mins ago












          • @Thomas updated code to support apex:reperat7
            – Pranay Jaiswal
            53 mins ago










          • Thanks!!! This made ik work.
            – Thomas
            44 mins ago
















          3














          You can pass the element id in the checkFileSize method, and then do your processing then



          <apex:page controller="FileUploadController">

          <apex:inputFile id="inputfile" value="{!newAtt.body}" filename="{!newAtt.name}" onchange="checkFileSize(event,id)" />

          <script>
          function checkFileSize(event , id ) {
          if(event.target.files[0].size > 2**20*5) {
          alert('File must be less than 5Mb');
          //**Clear input**
          document.getElementById(id).value ='';
          }
          }
          </script>
          </apex:page>





          share|improve this answer























          • Thanks for your answer, how can I make this work if the apex:input is between an apex repeat. For now it only works for the first input. How do I get the event inputfile?
            – Thomas
            58 mins ago












          • @Thomas updated code to support apex:reperat7
            – Pranay Jaiswal
            53 mins ago










          • Thanks!!! This made ik work.
            – Thomas
            44 mins ago














          3












          3








          3






          You can pass the element id in the checkFileSize method, and then do your processing then



          <apex:page controller="FileUploadController">

          <apex:inputFile id="inputfile" value="{!newAtt.body}" filename="{!newAtt.name}" onchange="checkFileSize(event,id)" />

          <script>
          function checkFileSize(event , id ) {
          if(event.target.files[0].size > 2**20*5) {
          alert('File must be less than 5Mb');
          //**Clear input**
          document.getElementById(id).value ='';
          }
          }
          </script>
          </apex:page>





          share|improve this answer














          You can pass the element id in the checkFileSize method, and then do your processing then



          <apex:page controller="FileUploadController">

          <apex:inputFile id="inputfile" value="{!newAtt.body}" filename="{!newAtt.name}" onchange="checkFileSize(event,id)" />

          <script>
          function checkFileSize(event , id ) {
          if(event.target.files[0].size > 2**20*5) {
          alert('File must be less than 5Mb');
          //**Clear input**
          document.getElementById(id).value ='';
          }
          }
          </script>
          </apex:page>






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 53 mins ago

























          answered 1 hour ago









          Pranay Jaiswal

          13.4k32351




          13.4k32351












          • Thanks for your answer, how can I make this work if the apex:input is between an apex repeat. For now it only works for the first input. How do I get the event inputfile?
            – Thomas
            58 mins ago












          • @Thomas updated code to support apex:reperat7
            – Pranay Jaiswal
            53 mins ago










          • Thanks!!! This made ik work.
            – Thomas
            44 mins ago


















          • Thanks for your answer, how can I make this work if the apex:input is between an apex repeat. For now it only works for the first input. How do I get the event inputfile?
            – Thomas
            58 mins ago












          • @Thomas updated code to support apex:reperat7
            – Pranay Jaiswal
            53 mins ago










          • Thanks!!! This made ik work.
            – Thomas
            44 mins ago
















          Thanks for your answer, how can I make this work if the apex:input is between an apex repeat. For now it only works for the first input. How do I get the event inputfile?
          – Thomas
          58 mins ago






          Thanks for your answer, how can I make this work if the apex:input is between an apex repeat. For now it only works for the first input. How do I get the event inputfile?
          – Thomas
          58 mins ago














          @Thomas updated code to support apex:reperat7
          – Pranay Jaiswal
          53 mins ago




          @Thomas updated code to support apex:reperat7
          – Pranay Jaiswal
          53 mins ago












          Thanks!!! This made ik work.
          – Thomas
          44 mins ago




          Thanks!!! This made ik work.
          – Thomas
          44 mins ago


















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Salesforce Stack Exchange!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.





          Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


          Please pay close attention to the following guidance:


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsalesforce.stackexchange.com%2fquestions%2f245072%2fhow-to-clear-the-filename-and-value-of-apexinputfile%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          Plaza Victoria

          In PowerPoint, is there a keyboard shortcut for bulleted / numbered list?

          How to put 3 figures in Latex with 2 figures side by side and 1 below these side by side images but in...