Javascript 如何从div中删除类属性?
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How to remove class attribute from div?
提问by 3gwebtrain
I am using JavaScript and I want to add/remove a Class attribute if a button is clicked. I am able to add the class, but I don't know how to remove it. how can I do that?
我正在使用 JavaScript,如果单击按钮,我想添加/删除 Class 属性。我可以添加课程,但我不知道如何删除它。我怎样才能做到这一点?
window.onload = function(){
var buttonGo = document.getElementsByTagName('button')[0];
var buttonCom = document.getElementsByTagName('button')[1];
var box = document.getElementById('box');
buttonGo.onclick = function(){
box.setAttribute('class','move');
}
buttonCom.onclick = function(){
// how to remove class name?
}
}
回答by BJ Safdie
box.removeAttribute("class")
should work.
box.removeAttribute("class")
应该管用。
回答by lonesomeday
回答by u476945
function hasClass(ele,cls) {
return ele.className.match(new RegExp('(\s|^)'+cls+'(\s|$)'));
}
function addClass(ele,cls) {
if (!this.hasClass(ele,cls)) ele.className += " "+cls;
}
function removeClass(ele,cls) {
if (hasClass(ele,cls)) {
var reg = new RegExp('(\s|^)'+cls+'(\s|$)');
ele.className=ele.className.replace(reg,' ');
}
}
You can use RegExp in theses three functions to check class existance, add class, and remove class. Here is the source openjs
您可以在这三个函数中使用 RegExp 来检查类是否存在、添加类和删除类。这是源代码openjs
回答by Nivas
Simple:
简单的:
box.removeAttribute('class');
See https://developer.mozilla.org/en/DOM/element.removeAttribute
请参阅https://developer.mozilla.org/en/DOM/element.removeAttribute
回答by ynkr
In the future-ish, you can also consider Element.classList.
在未来,您还可以考虑Element.classList。
var d = document.getElementsByTagName('div')[0];
d.classList; // []
d.classList.add('foo'); // undefined
d.classList; // ["foo"]
d.classList.remove('foo'); // undefined
d.classList; // []
I say future-ish b/c you have to consider this IE < 10.
我说未来的 b/c 你必须考虑这个 IE < 10。
回答by ant
Try this :
尝试这个 :
window.onload = function(){
var buttonGo = document.getElementsByTagName('button')[0];
var buttonCom = document.getElementsByTagName('button')[1];
var box = document.getElementById('box');
buttonGo.onclick = function(){
box.setAttribute('class','move');
}
buttonCom.onclick = function(){
box.className=''
}
}
or double quotes box.className=""
或双引号 box.className=""
回答by Brett Zamir
For cross-browser support:
对于跨浏览器支持:
buttonCom.onclick = function() {
box.className = ''; // IE
box.removeAttribute('class'); // Others
};
回答by user1146912
You should consider jQuery, than you can just use this: $('.itemclass').removeClass('classname');
你应该考虑 jQuery,而不是你可以使用这个: $('.itemclass').removeClass('classname');