步骤1:引入jQuery库 首先,在HTML文件中引入jQuery库。可以通过以下代码将最新版本的jQuery库引入到页面中: <script src=" 1. 这个代码将通过URL加载jQuery库文件。确保将其放置在<head>标签或<body>标签内的<script>标签中。 步骤2:获取class类名 在引入jQuery库之后,可以使用jQuery的选择器来获取具有特定class类名...
class selector Description:Selects all elements with the given class. version added:1.0jQuery( ".class" ) class:A class to search for. An element can have multiple classes; only one of them must match. For class selectors, jQuery uses JavaScript's nativegetElementsByClassName()function if the...
1.1 基础语法:$(selector).action( ) • 美元符号定义 jQuery • 选择符(selector)“查询”和“查找” HTML 元素 • jQuery 的 action() 执行对元素的操作 示例: $(this).hide() - 隐藏当前元素 $(".test").hide() - 隐藏所有 class="test" 的所有元素 $(“ul li:first”) - 每个<ul>的...
class selector描述: 选择给定样式类名的所有元素。 添加的版本: 1.0jQuery( ".class" ) class: 一个用来查找的类名。一个元素可以有多个类;其中只有一个必须匹配。 对于类选择器,如果浏览器支持,jQuery使用JavaScript的原生getElementsByClassName()函数来实现。 例子: Example: 找到该元素的类名为“myclass”。
The .class selector selects all elements with the specific class.The class refers to the class attribute of an HTML element.The class attribute is used to set a particular style for several HTML elements.Note: Do not start a class attribute with a number. It may cause problems in some ...
$(selector).slideDown(speed,callback);$(selector).slideUp(speed,callback);$(selector).slideToggle(speed,callback); <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <script src="../public/jquery-3.3.1/jquery-3.3.1.min.js" type="text/javascript" charset="utf...
This code selects an element with an ID of "myDivId". Since IDs are unique, this expression always selects either zero or one elements depending upon whether or not an element with the specified ID exists. 1 $("#myDivId"); This code selects an element with a class of "myCssClass...
$(selector).toggleClass(classname,function(index,currentclass),switch) ParameterDescription classnameRequired. Specifies one or more class names to add or remove. To specify several classes, separate the class names with a space function(index,currentclass)Optional. Specifies a function that returns ...
.addClass( className )Returns:jQuery Description:Adds the specified class(es) to each element in the set of matched elements. version added:1.0.addClass( className ) className Type:String One or more space-separated classes to be added to the class attribute of each matched element. ...
//$(selector).slideToggle(speed,callback); $("div").slideToggle(); 淡入淡出动画(fadeIn/fadeOut/fadeToggle/fadeTo) //fadeIn(speed, callback); $("#btn1").click(function(){ $("div").fadeIn(); }); //fadeOut(speed, callback); ...