How to check whether a Button is clicked by using JavaScript

Is there a simple way to do something along these lines:

JavaScript:

if(document.getElementById('button').clicked == true)
{
   alert("button was clicked");
}

HTML:

<input id="button" type="submit" name="button" value="enter"/>

Solution 1:

You can add a click event handler for this:

document.getElementById('button').onclick = function() {
   alert("button was clicked");
}​;​

This will alert when it's clicked, if you want to track it for later, just set a variable to true in that function instead of alerting, or variable++ if you want to count the number of clicks, whatever your ultimate use is. You can see an example here.

Solution 2:

Try adding an event listener for clicks:

document.getElementById('button').addEventListener("click", function() {
   alert("You clicked me");
}​);​

Using addEventListener is probably a better idea then setting onclick - onclick can easily be overwritten by another piece of code.

You can use a variable to store whether or not the button has been clicked before:

var clicked = false
document.getElementById('button').addEventListener("click", function() {
   clicked = true
}​);​

addEventListener on MDN

Solution 3:

This will do it

<input id="button" type="submit" name="button" onclick="myFunction();" value="enter"/>

<script>
function myFunction(){
    alert("You button was pressed");
};   
</script>