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Call Javascript Function On HTML Button Click


How To Call Javascript Function On HTML Button Click

> Here we consider how to call javascript function on button click.
> Lets start with one example here.
> Suppose we have a button inside div as shown below.

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> Inside Srcipt region, we have declared a javascript function.

function clickEvent() {
    alert('hello!');
};



> Now for calling this function on button click, we have two ways.

Call Javascript Function On HTML Button Click - Method 1

> In this way, we make the OnClick event inline to the HTML part.

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> Inside HTML button, write, onclick="clickEvent();".
> Now when button is clicked, the JavaScript function will be invoked.

Call Javascript Function On HTML Button Click - Method 2

> Here, we can attach the js function with the HTML button inside Script region.
> Inside Script region, find the HTML button by its ID and attach JS function.

document.getElementById("btnClick").onclick = clickEvent;



> Now when button is clicked, the JavaScript function will be invoked.
> That's all, by this way we can Call Javascript Function On HTML Button Click.

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Comments

Naveen :
Hi, I want to call a function in inner html like: (document.getElementById('take').innerHTML = abc()); but not working.

Please help???
chaitanya:
good

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