js根据classname获取元素htmlbodydiv classqqsesdsds/div/bodyscriptfunction getElements
js根据classname获取元素
<html><body><div class="qq">sesdsds</div></body><script>function getElementsByClassName(n) { var classElements = [],allElements = document.getElementsByTagName('*'); for (var i=0; i< allElements.length; i++ ){ if (allElements[i].className == n ) { classElements[classElements.length] = allElements[i]; } } return classElements;}var test=getElementsByClassName("qq")[0].innerText;alert(test);</script></html>
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