Question

Steps to recreate this issue:

1. Type something in the text box
2. Right after typing click the button.
3. I found that only onchange event was triggered.

Code:

<div>
    <input type="text" onchange="console.log('onchange');$('#message').css('display','none');" >
    <div id="message">
        Validating
    </div>
    <br>
    <input type="button" onclick="console.log('onclick');" value="click me">
</div>

DEMO

Answer 1

For onclick it is necessary to occur mouse-down and mouse-up event due to position change of your button its not calling onclick

Here is Demo for complete event.