


The example in this article describes how the jQuery plug-in realizes the color change of alternate rows in the table and the highlight effect when the mouse slides over it. Share it with everyone for your reference, the details are as follows:
This plug-in is designed to change the color of alternate rows in the table, and when the mouse moves over a certain row of the table, the row can be highlighted. The overall code is as follows:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>表格隔行变色且鼠标滑过高亮显示</title> <style> table{border-collapse:collapse;border:none;width:20%;} table tr td{border:1px solid #ccc;text-align:center;cursor:pointer;} .evenRow{background:#f0f0f0;} .oddRow{background:#ff0;} .activeRow{background:#f00;color:#fff;} </style> <script type="text/javascript" src="jquery-1.7.1.js"></script> </head> <body> <script> /* * tableUI 0.1 * 使用tableUI可以方便地将表格提示使用体验。先提供的功能有奇偶行颜色交替,鼠标移上高亮显示 * Dependence jquery-1.7.1.js */ ;(function($){ $.fn.tableUI = function(options){ //经常用options表示有许多个参数 //各种属性、参数 创建一些默认值,拓展任何被提供的选项 var defaults = { evenRowClass:"evenRow", oddRowClass:"oddRow", activeRowClass:"activeRow" }; var obj = $.extend(defaults,options); this.each(function(){ //this关键字代表了这个插件将要执行的jQuery对象 此处没有必要将this包在$号中如$(this),因为this已经是一个jQuery对象。 $(this)等同于 $($('#element')); //插件实现代码 var thisTable = $(this); //获取当前对象 此时this关键字代表一个DOM元素 我们可以alert打印出此时的this代表的是object HTMLTableElement //添加奇偶行颜色 $(thisTable).find("tr:even").addClass(obj.evenRowClass); $(thisTable).find("tr:odd").addClass(obj.oddRowClass); //添加活动行颜色 $(thisTable).find("tr").mouseover(function(){ $(this).addClass(obj.activeRowClass); }); $(thisTable).find("tr").mouseout(function(){ $(this).removeClass(obj.activeRowClass); }); }); }; })(jQuery); //在这个封闭程序中,我们可以无限制的使用$符号来表示jQuery函数。 </script> <table cellpadding="0" cellspacing="0"> <tr><td>1</td><td>2</td><td>3</td></tr> <tr><td>1</td><td>2</td><td>3</td></tr> <tr><td>1</td><td>2</td><td>3</td></tr> <tr><td>1</td><td>2</td><td>3</td></tr> <tr><td>1</td><td>2</td><td>3</td></tr> </table> <script> $(function(){ $("table").tableUI(); }) </script> </body> </html>
Readers who are interested in more jQuery-related content can check out the special topics on this site: "JQuery drag effects and skills summary", "jQuery extension skills summary", "JQuery common classic special effects summary", "jQuery animation and special effects usage summary", "jquery selector usage summary" and "jQuery common plug-ins and usage Summary》
I hope this article will be helpful to everyone in jQuery programming.

实现方法:1、用“$("img").delay(毫秒数).fadeOut()”语句,delay()设置延迟秒数;2、用“setTimeout(function(){ $("img").hide(); },毫秒值);”语句,通过定时器来延迟。

修改方法:1、用css()设置新样式,语法“$(元素).css("min-height","新值")”;2、用attr(),通过设置style属性来添加新样式,语法“$(元素).attr("style","min-height:新值")”。

区别:1、axios是一个异步请求框架,用于封装底层的XMLHttpRequest,而jquery是一个JavaScript库,只是顺便封装了dom操作;2、axios是基于承诺对象的,可以用承诺对象中的方法,而jquery不基于承诺对象。

增加元素的方法:1、用append(),语法“$("body").append(新元素)”,可向body内部的末尾处增加元素;2、用prepend(),语法“$("body").prepend(新元素)”,可向body内部的开始处增加元素。

在jquery中,apply()方法用于改变this指向,使用另一个对象替换当前对象,是应用某一对象的一个方法,语法为“apply(thisobj,[argarray])”;参数argarray表示的是以数组的形式进行传递。

删除方法:1、用empty(),语法“$("div").empty();”,可删除所有子节点和内容;2、用children()和remove(),语法“$("div").children().remove();”,只删除子元素,不删除内容。

去掉方法:1、用“$(selector).removeAttr("readonly")”语句删除readonly属性;2、用“$(selector).attr("readonly",false)”将readonly属性的值设置为false。

on()方法有4个参数:1、第一个参数不可省略,规定要从被选元素添加的一个或多个事件或命名空间;2、第二个参数可省略,规定元素的事件处理程序;3、第三个参数可省略,规定传递到函数的额外数据;4、第四个参数可省略,规定当事件发生时运行的函数。


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