How to Check Whether a Button Is Clicked by Using Javascript

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

This will do it

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

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

All the answers here discuss about onclick method, however you can also use addEventListener().

Syntax of addEventListener()

document.getElementById('button').addEventListener("click",{function defination});

The function defination above is known as anonymous function.

If you don't want to use anonymous functions you can also use function refrence.

function functionName(){
//function defination
}



document.getElementById('button').addEventListener("click",functionName);

You can check the detail differences between onclick() and addEventListener() in this answer here.

Just hook up the onclick event:

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

$("#button").on('click',function(){
//do something
});

you can do something like this:

<button onClick="funtion()">Button Goes Here</button

function alert(){
console.log('Alert Showed');
alert('You clicked me!');
}

<button onClick="alert()">Click me to get alerted</button>

function check() { 
    console.log("Button Clicked");
};

var button= document.querySelector("button"); // Accessing The Button // 
button.addEventListener("click", check); // Adding event to call function when clicked // 

document.querySelector("#button").addEventListener("click", () => {
    console.log("button was clicked");
})