属性选择器是一种 CSS 选择器,用于根据元素的属性及其值来选择元素。在 JavaScript 中,通过 querySelector 或querySelectorAll 方法结合属性选择器,可以灵活地选择具有特定属性的 DOM 元素。 常见的属性选择器包括: [attribute]:选择具有指定属性的元素。 [attribute=value]:选择属性等于指定值的元素。
方法一:通过document.querySelector 代码语言:txt 复制 const description = document.querySelector('meta[name="description"]').getAttribute('content'); console.log(description); 方法二:通过document.getElementsByTagName 代码语言:txt 复制 const metas = document.getElementsByTagName('meta'); let descripti...
1<script type="text/javascript">2window.onload=function(){3varbtn=document.querySelector("button");4btn.onclick=function(){5varbox=document.querySelector(".box");6box.style.display="flex";7}8varclose=document.querySelector(".close");9close.onclick=function(){10varbox=document.querySelec...
// 使用querySelector查询单个元素 document.querySelector(".class值") (2)示例 // 使用querySelector查询单个元素varelement=document.querySelector(".d2");undefinedconsole.log(element)// <div class="d2"> 1111 </div> 【3】放标签名querySelectorAll document.querySelectorAll方法返回...
=="undefined"){g=self}else{g=this}g.Clipboard=f()}})(function(){varcopy={};copy.coptText=function(copybtn,cb){copybtn=event||document.querySelector(copybtn)copybtn.addEventListener('click',function(){varcopyTextarea=document.querySelector(copybtn.getAttribute("data-copy"));//要拷贝的...
5 // We expect a `data` element specifying the binding 6 // in the form: data-bind-<object_id>="<property_name>" 7 var data_attr = "bind-" + object_id, 8 message = object_id + ":change"; 9 10 // Listen to change events on elements with the data-binding attribute and prox...
querySelector('.video-js')); Getting References to Players Once players are created, Video.js keeps track of them internally. There are a few ways to get references to pre-existing players. Using videojs Calling videojs() with the ID of element of an already-existing player will return ...
Element.hasAttribute():返回一个布尔值,表示当前元素节点是否有指定的属性 Element.removeAttribute():移除指定属性 (3)查找方法 Element.querySelector() Element.querySelectorAll() Element.getElementsByTagName() Element.getElementsByClassName() (4)事件方法 ...
Tagify can automatically restore the last used whitelist by setting a unique id to the Tagify instance, by using the localstorage to persist the whitelist & value data:var input = document.querySelector('input'), tagify = new Tagify(input, { id: 'test1', // must be unique (per-tagify ...
Enable the "should have an alt attribute from toolTip" unit-test in Node.js by @Snuffleupagus in #18998 Enable the 'gets PDF filename from query string appended to "blob:" URL' unit-test in Node.js by @Snuffleupagus in #18997 Use the toBase64Util helper function in the unit-tests by...