Question

In my aspx markup I have the following defined:

<asp:HiddenField runat="server" ClientIDMode="Static" ID="hidField" />

I have C# code as follows, which gives my hidden field a value:

hidField.value = check().ToString();

assume that check is a function which returns true, for simplicity.

I made JS code to do the following:

_myBool = $("#hidField");
alert(_myBool.value);

This alerts undefined.

For debugging purposes, I stepped through and saw that in C#, hidField.value is indeed true.
And I tried alerting _myBool.length which returned 1 and _myBool which returned [Object object] so Im not calling undefined on undefined.

Answer 1

Try this

_myBool = $("#hidField");  //my bool is a jQuery Object
alert(_myBool.val());   //can only get value with .val()

OR

_myBool = $("#hidField")[0];  //[0] gets the element in the object
alert(_myBool.value);  //can use the javascript .value