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The abbreviation of js getElementsByTagName_javascript skills

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Release： 2016-05-16 18:24:29
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Copy code The code is as follows:

//CLASS@Mr.Think*****getElementsByTagName
function tag(name,elem){
if(!document.getElementsByTagName) return false;
return (elem || document).getElementsByTagName(name);
}

The usage will not be described in detail. If it is used to obtain a specified tag set in the entire document, it can be obtained directly using tag("xx").
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