如果一个元素有id特性(attribute),那我们就可以使用document.getElementById(id)方法获取该元素,无论它在哪里。 例如: <div id="elem"> <div id="elem-content">Element</div> </div> <script>//获取该元素let elem = document.getElementById('elem');//将该元
1、javascript: document.getElementById(‘id’).firstChild.tagName;2、jQuery: $(‘#id’).children().first().prop(“tagName”);示例代码如下://点击span等标签里面的内容后变成可编辑的输入框 function edit(obj, name, id) { var that = $(obj);//var tag = obj.firstChild.tagName;...
所以没办法,只能用原生的JavaScript了,为了实现这个功能,我得通过HTML标签的Class来获得标签的DOM结构。 在JavaScript 内建的核心中,document对象及element对象总共可以通过三个方式来获取其下的元素,分别是:getElementById(‘id’) 、getElementsByName(‘name’) 、getElementsByTagName(‘tag’) 。 可是在设计网页时...
document.getElementById("id")document.getElementsByTagName("tag")设置元素样式 ele.style.styleName
父节点 parentElement // 获取到父节点 var parent = document.getElementById("parent"); 1. 2. 所有子节点 children // 获取到所有的子节点 console.log(parent.children); 1. 2. 第一个子节点 firstElementChild // 第一个子节点 var first = parent.firstElementChild; ...
4.表单提交(空格提交的问题)例 4.1(form.submitIEFF.html) function check() { var form = document.getElementById("regForm"); if (form.user.value == "") { alert("用户名不能为空!"); } else { form.submit(); } } 用户 <INPUT TYPE="button" onclick="check();" id="regBut...
The JavaScript getElementsByTagName() function is used to return all elements of the given tag name in order they are present in the document. The getElementsByTagName() function is built in function in JavaScript. This is a function of DOM element or document object, so it is called as ...
This usually involves a calls to.getElementsByClassName("*")and traversing through all matched elements, analyzing each element’sclassNameattribute along the way. Generally, the fastest method is to use a pre-compiled RegExp to test the value of the className attribute. ...
Sometimes, we may need to flip a media element in a web app. For example, we may need to flip a video element streaming from a camera to match what we actually see or correct scanned document images that are flipped. In this article, we are going to talk about... WEB TWAIN ...
letpeople=['geddy','neil','alex'],html=ejs.render('<%= people.join(", "); %>',{people:people});// With jQuery:$('#output').html(html);// Vanilla JS:document.getElementById('output').innerHTML=html; 注意事项 大多数情况下,EJS 将会按照我们的预期运行; 但是, 仍然需要注意: 显然,...