javascript - 设置等待时间，延迟时间，执行脚本

Question

greasemonkey 的这个脚本对我有用，当加载某个网站时单击按钮。

但是如何设置等待时间呢？示例:网站已加载，脚本等待 1 秒直到执行。

我的第二个问题是:如何在每次加载页面时只运行一次？脚本一遍又一遍地开始。

    // ==UserScript==
// @name     _YOUR_NAME
// @include  http://YOUR_SERVER.COM/YOUR_PATH/*
// @require  http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
// @require  https://gist.github.com/raw/2625891/waitForKeyElements.js
// @grant    GM_addStyle
// ==/UserScript==
/*- The @grant directive is needed to work around a design change
    introduced in GM 1.0.   It restores the sandbox.
*/

function clickSubmitBtnWhenItAppears (jNode) {
    var clickEvent  = document.createEvent ('MouseEvents');
    clickEvent.initEvent ('click', true, true);
    jNode[0].dispatchEvent (clickEvent);
}

//-- Value match is case-sensitive
waitForKeyElements (
    //"#btn_submit input[type='submit'][value*='Click Me Now']",
    "input[type='submit'][value*='Click Me Now']",
    clickSubmitBtnWhenItAppears
);

脚本来源:How do I get Greasemonkey to click on a button that only appears after a delay?

Answer 1

这可能是您正在寻找的:

$(document).ready(function() { //When document has loaded

setTimeout(function() {

//Code to run After timeout elapses

}, 2000); //Two seconds will elapse and Code will execute.

});