var elems = document.querySelectorAll(".widget.hover"); [].forEach.call(elems, function(el) { el.classList.remove("hover"); }); ... ... <看更多>

var els = document.getElementsByClassName('current-class-name');. removeClass(els, 'current-class-name');. addClass(els, 'new-class-name');. ... <看更多>

In this tutorial, you will learn how to use the getElementsByClassName() method to select elements by class name. ... <看更多>

I get an error in the console saying Cannot read property 'remove' of undefined . When I do execute document.getElementsByClassName('outter- ... ... <看更多>

Dom Collection: Using removeClass. Clicking the button will use Dom's removeClass method to remove the class baz from the element. ... <看更多>

getElementsByClassName (className); : if(doms.length > 0){ : var i; ... 看起來就是class remove掉後, getElementsByClassName()的結果也會即時 ... ... <看更多>