The onclick property of the GlobalEventHandlers mixin is the event handler for processing click events on a given element.

The click event is raised when the user clicks on an element. It fires after the mousedown and mouseup events, in that order.

functionRef is a function name or a function expression. The function receives a MouseEvent object as its sole argument. Within the function, this will be the object that onclick was bound to (which will also match event.currentTarget)

Only one onclick handler can be assigned to an object at a time. You may prefer to use the EventTarget.addEventListener() method instead, since it's more flexible.

This example changes the color of an element when it's clicked upon.

HTML

<div id="demo">Click here</div>

JavaScript

document.getElementById('demo').onclick = function changeContent() {

   document.getElementById('demo').textContent = "Help me";
   document.getElementById('demo').style = "Color: red";

}

Result

This example displays the coordinates at which the most recent mouse button click occurred.

HTML

<p>Click anywhere in this example.</p>
<p id="log"></p>

JavaScript

let log = document.getElementById('log');

document.onclick = inputChange;

function inputChange(e) {
  log.textContent = `Position: (${e.clientX}, ${e.clientY})`;
}

Result

• click event
• Related event handlers
  • GlobalEventHandlers.onauxclick
  • GlobalEventHandlers.ondblclick