<div class="web_index">
<div style="display:block" >content 1</div>
<div style="display:none">content 2</div>
<div style="display:none">content 3</div>
</div>
var div =document.getElementsByClass("web_index").getElementsByTagName("div");
它提示我有TypeError: document.getElementsByClass is not a function
。为什么,以及如何在web_index
DIV所有div
?
document.getElementsByClassName(“web_index”)。getElementsByTagName不是函数 – downa1234