Is there a way to simulate various user actions on a specific element, such as click, focus, mouseup, mousedown, keyup, and keydown?
Would it be done like this:
element.onclick();
element.onfocus();
element.onsubmit();
element.onmouseover();
element.onkeyup();
element.onkeydown();
Or is there a better method for accomplishing this task?
Thank you!
To simulate user-generated mouse events such as clicks, you can do something like this:
<div id="someID" onclick="alert('a');">
test
</div>
<script>
var theElement = document.getElementById('someID')
, triggerEvent = function triggerEvent(event, element) {
var evObj = document.createEvent('MouseEvents');
evObj.initEvent(event, true, true);
element.dispatchEvent(evObj);
};
triggerEvent('click', theElement);
</script>
This essentially creates an event from the element and allows the handlers to manage it. You can find a list of events here.
I hope this information proves helpful.
Elements have different onevent properties that could potentially be functions. While you can call these functions directly, doing so bypasses the DOM event handling system. It would be necessary for you to pass the appropriate Event objects to the functions yourself, as they will not automatically propagate to parent elements.
I am uncertain of the outcome if an element's event is set using addEventListener and you attempt to invoke its onevent function directly.
For now, it is advisable to stick to using methods like HTMLElement.prototype.click and HTMLElement.prototype.focus, as they handle all event propagation intricacies for you.
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