js set hidden form value code example

Example 1: get hidden field value in javascript

// HTML : 
<input type=hidden id="abcId" name="abcName" value="Wall Street! Money Never Sleep"/>
  
  // JAVASCRIPT :
   alert(document.getElementById('abcId').value);
   alert(document.formName.elements['abcName'].value);

Example 2: javascript change hidden input value

document.getElementById("myHiddenInputID").value = "MyNewValue";