how to set value of a input hidden field through javascript

Question

I am trying to call the resetyear function and its getting called also but the flow stops at alert  over    it doesnt tranfer its control to resetmaster  Please suggest me something       String flag           flag    String  session getAttribute  flag        System out println  flag       flag       if  flag    null            flag                 if  flag equals  yes        gt      lt script gt      alert 1        resetyear        dontreset          document getElementById  checkyear   value    1         alert document getElementById  checkyear   value     lt  script gt   lt    else if flag equals  no           gt   lt script gt      alert 2         document getElementById  checkyear   value    2         alert document getElementById  checkyear   value       resetyear     lt  script gt   lt   else    gt    function resetyear     if confirm  DO YOU WANT TO RESET THE YEAR           alert  hello          document forms  indexform   action    resetmaster         alert document forms  indexform   action         document forms  indexform   submit          alert  over        form action    resetmaster       form submit        alert 1

User · Answer

You need to run your script after the element exists   Move the  lt input type  hidden  name  checkyear  id  checkyear  value    gt  to the beginning

User · Answer

It seems to work fine in Google Chrome  Which browser are you using  Here the proof http   jsfiddle net CN8XL   Anyhow you can also access to the input value parameter through the document FormName checkyear value  You have to wrap in the input in a  lt form gt  tag like with the proper name attribute  like shown below    lt form name  FormName  gt       lt input type  hidden  name  checkyear  id  checkyear  value    gt   lt  form gt    Have you considered using the jQuery Library  Here are the docs for  val   function

User · Answer

The first thing I will try - determine if your code with alerts is actually rendered  I see some server  if  code in what you posted  so may be condition to render javascript is not satisfied  So  on the page you working on  right-click -  view source  Try to find the js code there  Please tell us if you found the code on the page

User · Answer

For me it works   document getElementById  checkyear   value    1   alert document getElementById  checkyear   value     http   jsfiddle net zKNqg   Maybe your JS is not executed and you need to add a function      around it all

User · Answer

Your code for setting value for hidden input is correct  Here is the example  Maybe you have some conditions in your if statements that are not allowing your scripts to execute

[javascript] how to set value of a input hidden field through javascript?

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