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javascript - querySelector search immediate children

I have some jquery-like function:

function(elem) {
    return $('> someselector', elem);
};

The question is how can i do the same with querySelector()?

The problem is > selector in querySelector() requires parent to be explicitly specified. Is there any workaround?

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Though it's not a full answer, you should keep an eye on the W3C Selector API v.2 which is already available in most browser, both desktop and mobile, except IE (Edge seems to support): see full support list.

function(elem) {
  return elem.querySelectorAll(':scope > someselector');
};

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