jQuery基础-2019年1月21日22点08分 - jQuery

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>jquery基础</title>
    <style>
        .hello,p{
            width: 200px;
            height: 200px;
            background-color: aqua;
            text-align: center;
            line-height: 200px;
            margin-bottom: 10px;
        }
        textarea{
            width: 400px;
            height: 200px;
            border-radius: 8px;
            resize: none;
            outline: none;
            padding: 5px;
        }
    </style>
    <!-- <script src="https://code.jquery.com/jquery-3.1.1.min.js"></script> -->
    <script src="js/jq_3.3.1_mi.js"></script>
    <script>
        $(function(){
            // $('.but').click(function(){
            //     $('.hello').css('display','none')
            // })
            // $('#but').click(function(){
            //     $('.hello').show(1000)
            // })
            // 类型选择器
            // $(':button').click(function(){
            //     $('.hello').css('background','blue')
            // })

            $('button.int').click(function(){
                $('.hello').text('我不好')
            })
            // 鼠标移入
            $('p').mouseover(function(){
                $(this).text('你又不认识').css('background','yellow')
            })
            // 鼠标移出
            $('p').mouseleave(function(){
                $(this).text('再见').css('background','aqua')
            })
            // * 选择所有元素
            $('input').click(function(){
                $('*').hide()
            })
            $('textarea').focus(function(){
                $(this).css('border','1px solid red')
            })
        })
    </script>
</head>
<body>
    <div class="hello">
        你好啊
    </div>
    <button class="but">点我隐藏</button>
    <button id="but">点我显示</button>
    <button class="int">点我惊喜</button>
    <p>你是谁</p>
    <form>
        <textarea></textarea>
    </form>
    <input type="button" value="清空">
</body>
</html>

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