问题
how to get <head> content of the current page
回答1:
You could use the javascript DOM API like this:
var headContent = document.getElementsByTagName('head')[0].innerHTML;
回答2:
You can use an element selector to get <head>, for example:
$("head")
//for example:
alert($("head").html()); //alerts the <head> children
You can give it a try here
回答3:
Simply as:
document.head
// returns object DOM Object
document.head.innerHTML
// returns text, like: '<title>Title of the page...'
来源：https://stackoverflow.com/questions/3592475/how-to-get-head-content-of-the-current-page-with-jquery-or-js