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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>Promise</title>
    <script src="http://code.jquery.com/jquery.js"></script>
</head>
​
<body>
    <h2>微信验证测试文本是否合法</h2>
    <input class="checkTxt" type="text" value="" placeholder="请在此输入" />
    <button onclick="connect_link()">Touch Me!</button>
    <p class="lastTxt"></p>
​
    <script>
        function connect_link() {
            var value;
            const promise = new Promise(function (resolve, reject) {
                // do someing
                var check_txt = $('.checkTxt').val()
                console.log(check_txt)
​
                if (check_txt == '合法') {
                    value = '检验：输入文字合法';
                    resolve(value)
                } else if (check_txt == '非法') {
                    value = '检验：输入文字非法'
                    reject(value)
                } else {
                    value = '检验：输入文字类型为其他'
                    reject(value)
                }
            });
​
            promise.then(function (value) {
                // success
                console.log('success', value);
                $('.lastTxt').html(value)
​
            }, function (error) {
                // failure
                console.log('failure', error);
                $('.lastTxt').html(error)
            });
        }
    </script>
</body>
​
<script src="https://code.jquery.com/jquery-1.11.3.js"></script>
</html>
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