如何在 TestCafe 中等待元素消失？

当我需要等待元素变得可见时，我可以简单地将选择器作为函数调用，如下所示：

await element.with({ visibilityCheck: true })();

但我怎样才能等待一个元素消失呢？

要等待元素消失，您可以使用我们内置的断言等待机制。请参见文档 https://devexpress.github.io/testcafe/documentation/test-api/assertions/#smart-assertion-query-mechanism有关其工作原理的更多信息。

import { Selector } from 'testcafe';

fixture `fixture`
    .page `http://localhost/testcafe/`;

test('test 2', async t => {
    //step 1

    //wait for the element to disappear (assertion with timeout)
    await t.expect(Selector('element').exists).notOk({ timeout: 5000 });

    //next steps
});

或者您可以使用ClientFunction https://devexpress.github.io/testcafe/documentation/test-api/obtaining-data-from-the-client/:

import { ClientFunction } from 'testcafe';

fixture `fixture`
    .page `http://localhost/testcafe/`;

const elementVisibilityWatcher = ClientFunction(() => {
    return new Promise(resolve => {
        var interval = setInterval(() => {
            if (document.querySelector('element'))
                return;

            clearInterval(interval);
            resolve();
        }, 100);
    });
});

test('test 1', async t => {
    //step 1

    //wait for the element to disappear
    await elementVisibilityWatcher();

    //next steps
});