在 JavaScript 中模拟人类点击

发布于 2024-12-04 20:57:09 字数 621 浏览 1 评论 0原文

我有一个小刮刀，我需要使用 JavaScript 单击锚链接。我尝试了几种方法：jQuery.click()、document.createEvent('MouseEvents')等。它们都有效，但并不完全有效。像人类点击一样执行（他们像应该那样打开一个选项卡，但不开始下载）。

锚标记具有此属性：

onclick="if (document.getElementById('ReportViewer_ctl01_ctl05_ctl00').selectedIndex == 0) return false; 
if (!ClientToolbarReportViewer_ctl01.HandleClientSideExport()) __doPostBack('ReportViewer$ctl01$ctl05$ctl01','');return false;"

我也尝试在命令行中运行到关键点：

 __doPostBack('ReportViewer$ctl01$ctl05$ctl01','')

这也可以工作，但不完全像人类点击。

如果需要，我可以详细说明，但目前我正在寻找我认为应该存在的灵丹妙药。

原文

I have a small scraper where I need to click an anchor link using JavaScript. I've tried a few ways: jQuery.click(), document.createEvent('MouseEvents') etc. They all sort of worked, however they don't fully execute like a human click (they open a tab like they should but don't start a download).

The anchor tag has this attribute:

onclick="if (document.getElementById('ReportViewer_ctl01_ctl05_ctl00').selectedIndex == 0) return false; 
if (!ClientToolbarReportViewer_ctl01.HandleClientSideExport()) __doPostBack('ReportViewer$ctl01$ctl05$ctl01','');return false;"

I've also tried running to crux of this in the command line :

 __doPostBack('ReportViewer$ctl01$ctl05$ctl01','')

this also sort of works but not fully like a human click.

I can go into more detail if required however at the moment I am looking for a magic bullet which I think should exist.

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厌味 2024-12-11 20:57:09

我保存了一个粘贴箱，其中保存了两种编程方法。当谷歌决定剥离窗口对象（以及所有其他对象）的默认功能时，我才感到失望>。>

http://pastebin.com/VMHvjRaR

function callClickEvent(element){
    var evt = document.createEvent("HTMLEvents"); 
    evt.initEvent("click", true, true); 
    element.dispatchEvent(evt);
}

function callClickEvent2(element){
    var evt = document.createEvent("MouseEvents");
    evt.initMouseEvent("click", true, true, window,
    0, 0, 0, 0, 0, false, false, false, false, 0, null);
    element.dispatchEvent(evt);
}

callClickEvent(document.getElementById("myElement"))
callClickEvent2(document.getElementById("myElement"))

MDN 文档：

I keep a pastebin saved of two programmatic ways to do it. It's only ever failed me when google decided to strip the window object (and every other object) of their default functions >.>

http://pastebin.com/VMHvjRaR

function callClickEvent(element){
    var evt = document.createEvent("HTMLEvents"); 
    evt.initEvent("click", true, true); 
    element.dispatchEvent(evt);
}

function callClickEvent2(element){
    var evt = document.createEvent("MouseEvents");
    evt.initMouseEvent("click", true, true, window,
    0, 0, 0, 0, 0, false, false, false, false, 0, null);
    element.dispatchEvent(evt);
}

callClickEvent(document.getElementById("myElement"))
callClickEvent2(document.getElementById("myElement"))

MDN documentation:

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