• jquery基本操作


    (1)jquery放在head中必须先:

    <head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <title></title>
        <script src="js/jquery-1.7.1.min.js"></script>
        <script>
            $(document).ready(function () {
                //所要进行的操作
            })//相当于JS中的 window.onload = function () {//所要进行的操作 }
           
        </script>
    </head>
    View Code

    (2)jquery的点击事件和格式

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
    
    <!DOCTYPE html>
    
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <title></title>
        <script src="js/jquery-1.7.1.min.js"></script>
        <script>
            $(document).ready(function () {
    
                $("#btn1").click(function () {//#后面是id
                    alert("?");
                });
            })
           
        </script>
    </head>
    <body>
        <form id="form1" runat="server">
        <input type="button" id="btn1"  value="btn1"/>
        </form>
    </body>
    </html>
    View Code

    (3)jquery同时对多个元素进行操作(用隔开)

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
    
    <!DOCTYPE html>
    
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <title></title>
        <script src="js/jquery-1.7.1.min.js"></script>
        <script>
            $(document).ready(function () {
    
                $("#btn1,#btn2").click(function () {//#后面是id
                    alert("?");
                });
            })
           
        </script>
    </head>
    <body>
        <form id="form1" runat="server">
        <input type="button" id="btn1"  value="btn1"/>
            <input type="button" id="btn2" value="btn2" />
        </form>
    </body>
    </html>
    View Code

    (4)jquery对元素的后代进行操作(用空格隔开)

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
    
    <!DOCTYPE html>
    
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <title></title>
        <script src="js/jquery-1.7.1.min.js"></script>
        <script>
            $(document).ready(function () {
    
                $("#div1 #btn1").click(function () {//#后面是id
                    alert("?");
                });
            })
           
        </script>
    </head>
    <body>
        <form id="form1" runat="server">
            <div id="div1" style="100px;height:100px;background-color:red;">
        <input type="button" id="btn1"  value="btn1"/></div>
    
            <input type="button" id="btn2" value="btn2" />
        </form>
    </body>
    </html>
    View Code

    (5)jquery对某个元素进行操作(第一个(first),随后一个(last),任意一个(eq(索引号)),奇数(odd),偶数(even),某一堆(小于lt(索引号),大于gt(索引号)),排除某一个(not(选择器)))

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
    
    <!DOCTYPE html>
    
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <title></title>
        <script src="js/jquery-1.7.1.min.js"></script>
        <script>
            $(document).ready(function () {
    
                $(".div1:first").click(function () {//对第一个div的操作
    
                    alert("第一个div");
                });
                $(".div1:last").click(function () {//对最后一个div的操作
    
                    alert("最后一个div");
                });
                $(".div1:eq(2)").click(function () {//eq(索引号) 对任意一个div的操作
    
                    alert("第三个div");
                });
                $(".div1").eq(3).click(function () {//eq(索引号)的另一种写法
    
                    alert("第四个div");
                });
                $(".div1:lt(3)").click(function () {//lt(索引号) 小于索引号的该元素
                    alert("对索引号小于3的div进行操作");
                });
                $(".div1:gt(3)").click(function () {//lt(索引号) 小于索引号的该元素
                    alert("对索引号大于3的div进行操作");
                });
                $(".div1:odd").click(function () {//odd 索引号为奇数的该元素
    
                    alert("对索引号为奇数的div的操作");
                });
                $(".div1:even").click(function () {//even 索引号为偶数的该元素
                    alert("对索引号为偶数的div的操作");
                });
    
                $(".div1:not(.div1:eq(1))").click(function () {//not(选择器)
    
                    alert("对索引号不为1的div的操作");
                });
    
            });
           
        </script>
        <style>
            .div1 {
            100px;
            height:100px;
            background-color:red;
            float:left;
            margin-left:10px;
            }
        </style>
    </head>
    <body>
        <form id="form1" runat="server">
            <div class="div1" ></div>
            <div class="div1" ></div>
            <div class="div1" ></div>
            <div class="div1" ></div>
            <div class="div1" ></div>
            <div class="div1" ></div>
            <div class="div1" ></div>
        </form>
    </body>
    </html>
    View Code

    (6)属性过滤(自己添加属性,对其操作[属性名=值][属性名!=值]

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
    
    <!DOCTYPE html>
    
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <title></title>
        <script src="js/jquery-1.7.1.min.js"></script>
        <script>
            $(document).ready(function () {
    
                $(".div1[aaa]").click(function () {//含有aaa属性的div1的操作
    
                    alert("该div有属性aaa");
                });
                $(".div1[aaa=bbb]").click(function () {// [属性名=值]  属性aaa=bbb的div1的操作
    
                    alert("该div的aaa属性值为bbb");
                });
                $(".div1[aaa!=bbb]").click(function () {//[属性名!=值]   属性aaa!=bbb并且没有属性aaa的div1的操作,
                    alert("该div的aaa属性值不为bbb");
                });
    
    
            });
           
        </script>
        <style>
            .div1 {
            100px;
            height:100px;
            background-color:red;
            float:left;
            margin-left:10px;
            }
        </style>
    </head>
    <body>
        <form id="form1" runat="server">
            <div class="div1" ></div>
            <div class="div1" aaa="aaa"></div>
            <div class="div1" aaa="bbb"></div>
            <div class="div1" aaa="ccc"></div>
            <div class="div1" ></div>
            <div class="div1" ></div>
            <div class="div1" ></div>
        </form>
    </body>
    </html>
    View Code

    (7)内容过滤   contains("字符串")  has(选择器)

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
    
    <!DOCTYPE html>
    
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <title></title>
        <script src="js/jquery-1.7.1.min.js"></script>
        <script>
            $(document).ready(function () {
    
                $(".div1:contains('c')").click(function () {//contains(string s)
    
                    alert("该div内容有c");
                });
                $(".div1:has(p)").click(function (){//has(元素)
                    $(this).css("background-color", "black");//将class为div1,并且含有p标签的div的背景设置为黑色
                });
            });
           
        </script>
        <style>
            .div1 {
            100px;
            height:100px;
            background-color:red;
            float:left;
            margin-left:10px;
            }
        </style>
    </head>
    <body>
        <form id="form1" runat="server">
            <div class="div1" ></div>
            <div class="div1" aaa="aaa">aaa</div>
            <div class="div1" aaa="bbb">abc</div>
            <div class="div1" aaa="ccc"><p>aab</p></div>
            <div class="div1" ></div>
            <div class="div1" ></div>
            <div class="div1" ></div>
        </form>
    </body>
    </html>
    View Code

    (8)复合事件(hover,toggle)

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
    
    <!DOCTYPE html>
    
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <title></title>
        <script src="js/jquery-1.7.1.min.js"></script>
        <script>
            $(document).ready(function () {
    
                $("#div1").hover(function () {
                    $(this).css("background-color","yellow");
                }, function () {
    
                    $(this).css("background-color", "gray");
                });//相当于mouseover和mouseout事件
    
    
                $(".div2").toggle(function () {
                    $(this).css("background-color", "yellow");
                }, function () {
                    $(this).css("background-color", "gray");
                }, function () {
                    $(this).css("background-color", "red");
                }, function () {
                    $(this).css("background-color", "blue");
                });//点击一次变一次颜色,变完一遍后重新开始
    
    
    
    
    
    
            });
        </script>
        <style>
            #div1 {
            100px;
            height:100px;
            float:left;
            margin-left:10px;
            background-color:#B0E0E6;
            }
            .div2 {
            100px;
            height:100px;
            float:left;
            margin-left:10px;
            background-color:#B0E0E6;
            }
        </style>
    </head>
    <body>
        <form id="form1" runat="server">
            <div id="div1" ></div>
            <div class="div2"></div>
            <div class="div2"></div>
            <div class="div2"></div>
            <div class="div2"></div>
            <div class="div2"></div>
        </form>
    </body>
    </html>
    View Code

    (9)冒泡事件(阻止冒泡事件的连续方法:return false)

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
    
    <!DOCTYPE html>
    
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <title></title>
        <script src="js/jquery-1.7.1.min.js"></script>
        <script>
            $(document).ready(function () {
    
                $("#d1").click(function () {
                    alert("d1");
                    return false;
                });//如果没有return false,就会执行d1的父级直至body的点击事件。
    
                $("#d2").click(function () {
                    alert("d2");
                    return false;
                });
    
                $("#d3").click(function () {
                    alert("d3");
                    return false;
                });
    
                $("#d4").click(function () {
                    alert("d4");
                    return false;
                });
    
            });
        </script>
    
    </head>
    <body>
        <form id="form1" runat="server">
            <div id="d1" style="200px;height:200px;background-color:black">
                <div id="d2" style="150px;height:150px;background-color:gray">
                    <div id="d3" style="100px;height:100px;background-color:#B0C4DE">
                        <div id="d4" style="50px;height:50px;background-color:#ADFF2F"></div>
                    </div>
                </div>
            </div>
    
    
        </form>
    </body>
    </html>
    View Code

    (10)设置样式和属性(addclass,attr,removeAttr,css,offset,hide.show)

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
    
    <!DOCTYPE html>
    
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <title></title>
        <script src="js/jquery-1.7.1.min.js"></script>
        <script>
            $(document).ready(function () {
    
                $("#div1").click(function () {
    
                    alert($(this).css("background-color"));//获取div1的background-color
                });
    
                $("#div2").click(function () {
    
                    $(this).css("background-color", "gray");//设置div2的background-color为gray
                    alert($(this).offset().top);//获取dinv2距离顶部的距离
                });
    
                $("#div3").click(function () {
                    $(this).hide();//点击隐藏
                });
                $("#btn1").click(function () {
    
                    $(this).attr("disabled", "disabled");//点击使按钮不可用
                });
    
                $("#btn2").click(function () {
                    $("#btn1").removeAttr("disabled");//移除某属性 使按钮可用
                });
    
                $("#div4").click(function () {
                    $(this).addClass("div4");//添加class
                });
    
    
    
            });
        </script>
        <style>
            * {
            margin:0px;
            padding:0px;
            }
            #div1 {
            100px;
            height:100px;
            float:left;
            margin-left:10px;
            background-color:#B0E0E6;
            }
            #div2 {
            100px;
            height:100px;
            float:left;
            margin-left:10px;
            background-color:#B0E0E6;
            }
            #div3 {
            100px;
            height:100px;
            float:left;
            margin-left:10px;
            background-color:#000000;
            }
            .div4 {
            
             100px;
            height:100px;
            float:left;
            margin-left:10px;
            background-color:blue;
            }
        </style>
    </head>
    <body>
        <form id="form1" runat="server">
           <div id="div1">div1</div>
            <div id="div2">div2</div>
             <div id="div3">div3</div>
            <input type="button" id="btn1" value="btn1"   />
            <input type="button" id="btn2" value="使btn1能用"   />
            <div id="div4">你好</div>
        </form>
    </body>
    </html>
    View Code

    (11)DOM操作

    ①属性:

    获取属性:$("选择器").attr(“属性名”)

    设置属性:$("选择器").attr(“属性名”,“属性值”)

    删除属性:$("选择器").removeAttr(“属性名”)

    ②内容:

        表单元素:取值:$("选择器").val()

                         赋值:$("选择器").val("值")

        非表单元素:取值:$("选择器").text()   $("选择器").html()

                            赋值:$("选择器").text(“值”)   $("选择器").html("值")

    ③相关元素:

         父,前辈:parent()   parents(选择器)

         子,后代:children(选择器) (只能选儿子们)    find(选择器)  (能选儿子们,孙子们,重孙子们.......等等)

        兄弟:prev()  prevAll(选择器)    next()  nextAll(选择器)  

    ④操作相关元素:

          添加:  append:内部添加

                         after:下部平级添加

                         before:上部平级添加

         删除:  empty:清空所有内容元素

                     remove:移除某个元素

          复制:clone

    (12)未来元素      对 窗体运行后动态添加的元素的操作

       格式:   对象.live("事件名",function(){});

       

        完!!!!

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  • 原文地址:https://www.cnblogs.com/wwz-wwz/p/6046389.html
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