How to convert string to variable name in Javascript

If you need to create a variable dynamically on the server side and retrieve the value on the client side, use the next example to use the value assigned:

// Declare the variable name

var myStringName = "echoHello";

// Assign a value to the dynamic string variable

window[myStringName] = "Hello from dynamic string variable!";

// Show value

alert(window[myStringName]);

// Or call the variable name

alert(echoHello);

You can even assign a function to the dynamic string variable:

// Declare the variable name

var myStringName = "alertStringVariable";

// Assign a function to the dynamic variable

window[myStringName] = function () {

    alert("Hello from dynamic function variable...");

}

// Execute the function assigned of the variable

alertStringVariable();

Uncaught TypeError: $(...).datepicker is not a function

If you get the errior:

          Uncaught TypeError: $(...).datepicker is not a function

The most common reason is a duplicate reference to a JQuery file:

• Verify you don't have different versions of JQuery in the same page
• If developing MVC, check your BundleConfig and the web page

JQuery - Detect a button click

The following example shows how to detect a button click.
With JQuery detect when the document is ready
Load for the button by it's id
Call the Click event of the button
Make an empty function with the code to be executed when the click event happens

 

// Java Script Function
$(document).ready(function () {
    $('#btn').click(function () {
        alert("The button was clicked.");
    });
});


    Click this button:

    

JQuery - Get the value of a drop down list

Use this code if you need to get the value of a selected drop down list:

//
// Include a reference to the Jquery library




 Blue
 Yellow
 White

JQuery Change the form's action url

To change the action form url use the next code:

JQuery - Get the value of a text box with JQuery

Use this if you need to extract the value of a text box

//
// Include a reference to the Jquery library

JQuery - How to veify JQuery was loadded on the web page

Use this code to verify JQuery was loadded property to your web page.

 

//
// See if the jQuery was loadded
if (jQuery) {  
    alert("jQuery is loaded");
} 
else {
    alert("jQuery is not loaded");
}
//
//

JQuery - Get the value of a radio button

    
    


     A
     B
     C

JQuery - Hide a group of elements

Use the following example to hide a group of elements when a check box is click it using JQuery.

    

        Tmp ones

        

        

        

        


        
           Please hide me!!!!
        

JQuery check all checkboxes

This is the easiest way to check and uncheck checkboxes in a form.

   
//
// Include a reference to the Jquery library

---