getElementById and getElementByClassName

The snippet here checks to see if the browser is mobile then adds type="date" to the 2 specified input fields.
    if(isMobile ) {
            document.getElementById('date1').type = 'date';
	        document.getElementById('date2').type = 'date';
        } else {

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It works great.
Problem is I need to change the script to look for a class and not an id however I'm not having much look with he following
document.getElementsByClassName('date-pick').type = 'date';

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Would really like to get this working so assistance approciated
LVL 5
Neil_BradleyWeb UX/UI DeveloperAsked:
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Rainer JeschorCommented:
Hi,
question would be in plain JavaScript or in jQuery?

For plain JS it will be:
var targetElements = document.getElementsByClassName('date-pick');
for (var i = 0, aLen = targetElements.length; i < aLen; i++) {
  targetElements[i].type='date';
}

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HTH
Rainer

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Rainer JeschorCommented:
So your complete sample would look like
if(isMobile ) {
	var targetElements = document.getElementsByClassName('date-pick');
	for (var i = 0, aLen = targetElements.length; i < aLen; i++) {
		targetElements[i].type='date';
	}
} else {

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Neil_BradleyWeb UX/UI DeveloperAuthor Commented:
Thanks both. Worked perfectly..
Cheers,
Neil
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