How to set the checkbox value with JS? [duplicate]

I have parent element like:

<span style=”background: yellow; padding: 50px;” onClick=”setCheckBox()”><span>
<span> </span> <input type=”checkbox” name=”f01″ value=”100″></span></span>

and js function:

function setCheckBox() {
document.getElementsByTagName(‘input'[0].checked = ‘true’;
}

Want to change the checkbox input on parent click (yellow color)

Thanks in advance!