html javascript Validation Error Message

Question

Using the HTML "required" indicator for a field displays a very nice error message when there is no entry in the field showing "Please fill out this field" and pointing to the field, and message clears after about 5 secs. Using javascript for additional validation provides an unattractive alert box with a message requiring user intervention. Is there a way for javascript to display an HTML message for the field or similar, or do I have to use eg. jQuery for this kind of functionality?

RobG · Accepted Answer · 2011-05-06 08:54:08Z

1

You can have a hidden div or span and then on validation of your form just set the text and display of that hidden field to be the error message you want.

function doValidate() {
   var myField = document.getElementById("textbox1");
   if ( myField.value.length == 0 ) {  // fail
     document.getElementById("hiddenDiv").style.display = '';
     document.getElementById("hiddenDiv").innerHTML = "Fail";
   }
}

edited May 6, 2011 at 8:54

RobG

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answered May 6, 2011 at 3:23

Avitus

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2 Comments

brianoh Over a year ago

Thanks for that. How do I show the error message in red for eg. <TD ID="error_password"></TD> which is the area for the error message?

brianoh Over a year ago

It's OK, I eventually found it - "style=color:red".

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