代码实例：

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <script src="http://blog.fqidc.cn/jquery-3.4.1.min.js" type="text/javascript" charset="utf-8">         </script>
    <title>11.12</title>
    <style type="text/css">
        div{
            float: left;
        }
        .box{
            width: 200px;
            height: 200px;
            background-color: deeppink;
        }
        .box1{
            width: 200px;
            height: 200px;
            background-color: brown;
        }
        .box2{
            width: 200px;
            height: 200px;
            background-color: aquamarine;
        }
        .bx{
            float: left;
            width: 200px;
            height: 200px;
            background-color: navajowhite;
        }
    </style>
</head>
<body>
    <p>哈哈哈哈哈</p>
    <button>点击隐藏</button>
    <br /><br /><br />
    <div class="box">
        
    </div>
    <div class="box1">
        
    </div>
    <div class="box2">
        
    </div>
    <div style="clear: both; width: 100%; height: 20px;">
        
    </div>
    <div class="bx">
        0
    </div>
    <div class="bx">
        1
    </div>
    <div class="bx">
        2
    </div>
    <div class="bx">
        3
    </div>
    <div class="bx">
        4
    </div>
    <div class="bx">
        5
    </div>
    <script type="text/javascript">
    
        for(var i=0;i<$(".bx").length;i++){
            $(".bx").eq(i).click(function(){
                $(this).css("background-color","#A52A2A");    
            });
        };
    
    
        $(document).ready(function(){
            $("button").click(function(){
                $("p").hide();
            });
        });
        //on 方法
        $(".box").on("click",function(){
            $(this).css("background-color","darkgreen")
        });
        //click 方法
        $(".box1").click(function(){
            $(this).css("background-color","aqua")
        });
        //bind 方法
        $(".box2").bind("click",function(){
            $(this).css("background-color","blueviolet")
        });
    </script>
</body>

</html>