querySelector、querySelectorAll、attribute的运用以及 click的使用 技术标签: 表白林祤环 小白日志 js html javascript 前端<!DOCTYPE html> <html lang="en"> <!--不说了,继续表白林祤环--> <head> <meta charset="UTF-8"> <meta name="viewport"
querySelector 属性选择是一种在 JavaScript 中使用的方法,它允许你通过 CSS 选择器语法来选择具有特定属性的 DOM 元素。这意味着你可以基于元素的属性名、属性值或其他属性特征来选择元素。 2. 基本语法 javascript document.querySelector('[attribute=value]'); ...
In short, if you're looking for a single element that matches the provided selector, usequerySelector(), and if you're looking for a collection of elements, usequerySelectorAll(). You can also make the query more specific by only looking fordivelements that have an attribute value that...
- Select by class: const element = document.querySelector('.classname'); - Select by ID: const element =document.querySelector('#idname'); - Select by tag name: const element = document.querySelector('tagname'); - Select by attribute: const element = document.querySelector('[attribute...
使用属性选择器([attribute])选择具有特定属性的孩子: 使用伪类选择器(:pseudo-class)选择具有特定伪类的孩子: 使用伪类选择器(:pseudo-class)选择具有特定伪类的孩子: 这些选择器可以根据具体的需求进行组合使用,以选择所需的孩子元素。请注意,querySelectorAll方法返回的是一个NodeList对象,可以通过遍历该对象来访问每...
(attribute)// 选取所有,id属性='large'的,并且class='bg'的,img标签document.querySelectorAll("img[id='large'][class='bg']");document.querySelector("img[id='large'][class='bg']");// "多个" 选取条件, 用逗号隔开 (相当于 A 或 B)document.querySelectorAll(".class_x, .class_y");...
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'); // 将该元素背景改为红色 elem.style...
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Save(Path.Combine(savePath)); Example-CssSelectorToStyleElement hosted with by GitHub JavaScript querySelectorAll() Copy 1<script> 2 // Create a CSS Selector that extracts all elements whose 'class' attribute equals 'square2' 3 var elements = document.querySelectorAll(".square2"); ...
According to https://html.spec.whatwg.org/#case-sensitivity-of-selectors, the CSS selector attribute name must be converted to lowercase in HTML elements, and then compared case-sensitive to the attribute name in the element. We implement this not by doing the explicit conversion, but by a ...