How to Prevent Users from Submitting a Form Twice

html, javascript

Solution

try out this code..

<input type="submit" name="btnADD" id="btnADD" value="ADD" onclick="this.disabled=true;this.value='Sending, please wait...';this.form.submit();" />

Problem

``` <input type="submit" name="btnADD" id="btnADD" value="ADD"/> ``` when user click add button twice, from get submitted twice with same data into table. So Please help me to restrict user to submit from twice.

Original source