I'm curious if there is a method to determine the status of a .net required field validator using JavaScript

I am attempting to determine the status of the "required field validators" within an .aspx file.

By state, I am referring to whether they are enabled or disabled rather than if their contents are valid or invalid.

I am aware that the enabled/disabled state can be adjusted using ValidatorEnable(control, true); or ValidatorEnable(control, false);

Is there a method to ascertain if they are currently enabled or disabled?

Thank you in advance.

Answer №1

If you want to handle it on the client side, let's say you have a required field validator set up like this:

<asp:TextBox ID="txtName" runat="server" ClientIDMode="Static"></asp:TextBox>

<asp:RequiredFieldValidator ID="reqValName" ControlToValidate="txtName" runat="server"
    CssClass="validation" ErrorMessage="*Required">
</asp:RequiredFieldValidator>

ASP.NET 4.0 will generate JavaScript code for you as shown below:

var reqValName = document.all ? document.all["reqValName"] : document.getElementById("reqValName");
reqValName.controltovalidate = "txtName";
reqValName.errormessage = "*Required";
reqValName.enabled = "False";   // <---- THIS LINE DISABLES THE VALIDATOR ON SERVER SIDE.
reqValName.evaluationfunction = "RequiredFieldValidatorEvaluateIsValid";
reqValName.initialvalue = "";

The line reqValName.enabled = "False"; is only generated when the validator is disabled, so you can use that information to determine its state. Remember that the value of enabled is a string and consider placing your checking JavaScript at the bottom of the page (before closing body tag).

In ASP.NET 4.5, things are easier to check since the attribute is now in the data-val-enabled attribute of the span element rather than a JavaScript variable. Take a look at the HTML generated by ASP.NET 4.5:

<span class="validation" id="reqValName" style="visibility: hidden;" data-val-initialvalue="" 
data-val-evaluationfunction="RequiredFieldValidatorEvaluateIsValid" data-val="true" data-val-enabled="False" 
data-val-errormessage="*Required" data-val-controltovalidate="txtName">

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