Me n My Programming

If Only I Have TIme

ITSB Spring 104 – Javascript Input Validation

Sometimes, we need to check the input before they were store. This is the example on how it can be used:

function validateForm()
{
var x=document.forms[“myForm”][“fname”].value;
if (x==null || x==””)
  {
  alert(“First name must be filled out”);
  return false;
  }
}

<form name=”myForm” action=”demo_form.asp” onsubmit=”return validateForm()” method=”post”>
First name: <input type=”text” name=”fname”>
<input type=”submit” value=”Submit”>
</form>

It was taken from here.

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This entry was posted on September 17, 2013 by in Uncategorized and tagged , , .
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