小编DJR*_*DJR的帖子

我正在使用jQuery DataTables在spring 4.x应用程序中创建一个语句页面来呈现语句.

通过Jackson消息转换器解析后,服务器返回了以下对象.

{
    "data":[
        {
            "desc":"SUBWAY        00501197 BRONX        NYUS",
            "amount":"-",
            "date":"5.72"
        },
        {
            "desc":"MIDTOWN COMICS         NEW YORK     NYUS",
            "amount":"-",
            "date":"73.32"
        },
        {
            "desc":"GOOGLE *PlayDog Soft   GOOGLE.COM/CHCAUS",
            "amount":"-",
            "date":"1.99"
        },
        {
            "desc":"BIMG PRIMARY CARE      NEW YORK     NYUS",
            "amount":"-",
            "date":"25.00"
        },
        {
            "desc":"GOOGLE *PlayDog Soft   GOOGLE.COM/CHCAUS",
            "amount":"-",
            "date":"1.99"
        },
        {
            "desc":"GOOGLE *PlayDog Soft   GOOGLE.COM/CHCAUS",
            "amount":"-",
            "date":"1.99"
        },
        {
            "desc":"Walgreens Speci 205 8THNEW YORK     NYUS",
            "amount":"-",
            "date":"10.00"
        },
        {
            "desc":"GOOGLE *SGN Games      GOOGLE.COM/CHCAUS",
            "amount":"-",
            "date":"9.99"
        },
        {
            "desc":"REDBOX *DVD RENTAL     866-733-2693 …

我有一个包含两个字段用户名和密码的表单。输入用户名后，下一个按钮被启用，一旦我点击它，它就会显示一个密码字段，一旦输入，它会再次启用下一个按钮。如何等待按钮在表单更新之间启用？

我尝试了以下方法，一种被评论，另一种没有。两者都不适合我。

(async () => {
    const browser = await puppeteer.launch({headless: false});
const page = await browser.newPage();
await page.goto('http://localhost:9000/start#!');

await page.type('#login-form-un-field', 'xxxx')
// await page.waitForTarget('#default-next-btn:not([disabled])')
await page.$eval('#default-next-btn:not([disabled])', elem => elem.click());
// const btnNext = await page.$('#default-next-btn');
// btnNext.click();
await page.type('login-form-passcode', '1234');
await page.click('#default-next-btn');
await browser.close();
})();```

Thanks for the help in advance.

Edit: the button is always present on the page. It is just disabled while form entries are being validated.