WaitUntil

等待满足某种条件后执行,目前不支持嵌套调用

Tính đến 11-10-2020. Xem phiên bản mới nhất.

Script này sẽ không được không được cài đặt trực tiếp. Nó là một thư viện cho các script khác để bao gồm các chỉ thị meta // @require https://update.greasyfork.org/scripts/412875/856255/WaitUntil.js

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(Tôi đã có Trình quản lý tập lệnh người dùng, hãy cài đặt nó!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         WaitUntil
// @namespace    http://bbs.91wc.net/?wait-until
// @version      0.1
// @description  等待满足某种条件后执行,目前不支持嵌套调用
// @author       Wilson
// ==/UserScript==

var WaitUntil = (function(){
    var waitUntil=function(condfunc, callback, interval, trys){
        var getGuid = getGuid||function() {
            var d = new Date().getTime();
            var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
                var r = (d + Math.random()*16)%16 | 0;
                d = Math.floor(d/16);
                return (c=='x' ? r : (r&0x3|0x8)).toString(16);
            });
            return uuid;
        };
        var timer = {}, counter={};
        var waiter = function(condfunc, callback, interval, trys, guid){
            guid = guid || getGuid();
            interval = interval || 100;
            trys = trys || 300;
            counter[guid] = counter[guid] ? counter[guid]++ : 1;
            if(counter[guid]>trys){
                if(timer[guid]) clearTimeout(timer[guid]);
                //callback('fail');
                return;
            }
            timer[guid] = setTimeout(function(){
                if(condfunc()){
                   if(timer[guid]) clearTimeout(timer[guid]);
                    callback('ok');
                } else {
                    if(timer[guid]) clearTimeout(timer[guid]);
                    waiter(condfunc, callback, interval, trys, guid);
                }
            }, interval);
        }
        waiter(condfunc, callback, interval, trys);
    }
    return waitUntil;
})();

//使用示例
//WaitUntil(function(){return typeof jQuery !=="undefined" && $(".test").length>0}, function(){
//    alert($(".test").html());
//});

//其他参数
//condfunc 满足条件的函数
//callback 条件满足后执行的回调函数
//interval 监听满足条件的时间间隔,单位毫秒,默认100
//trys 尝试次数,超过这个数值就停止监听,默认为300(因默认间隔是100毫秒,所以默认停止监控时间为300*100毫秒,即30秒)