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javascript - On click event on HTML requires double click

I have this anchor which has an onclick function that changes the background color of certain div to green. It is properly working but the problem is it needs to be double clicked in order for the function to be executed.

HTML:

<a onclick="btngreen()" href="">MENU</a>

Javascript:

function btngreen(){
    document.getElementById("nameofdiv").style.backgroundColor = 'green';
}
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You could use ondblclick

<a ondblclick="btngreen()" href="">MENU</a>

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