如何去除自动判断语句？

Question

初学程序，看了一些实例还是有些不清楚

例如

var isChrome = navigator.userAgent.indexOf("AppleWebKit") != -1;
var isFirefox = navigator.userAgent.indexOf("Firefox") != -1;
var url = window.location.href.toLowerCase(); 
function beginExecute() {
……………………
……………………
}
if (url.indexOf("zh-tw.facebook.com") >= 0 || url.indexOf("www.facebook.com") >= 0 || url.indexOf("/search") >= 0 || url.indexOf("/url") >= 0) { 
  if (!isChrome && !isFirefox) {
    alert("很抱歉，未能识别您的浏览器，请使用Firefox或Chrome浏览器！");
  } else if (isFirefox && "undefined"===typeof(GM_notification)) {
    alert("很抱歉，本脚本需要最新的Scriptish扩展、不支持GreaseMonkey，请禁用您的GreaseMonkey扩展并安装Scriptish！");
    window.open("https://addons.mozilla.org/zh-CN/firefox/addon/scriptish/");
  } else {
    window.onload = beginExecute();
  }
}

如何将这段代码的“判断浏览器”的语句删除变为简单的语句，让它直接运行，不去判断浏览器？？？求指导

---

Wer keinen starken Willen hat, kann nie eine hohe Intelligenz erreichen.

Answer 1

就用这句window.onload = beginExecute();

Answer 2

同意楼上，那几个if就是判断浏览器的，你把他们都删掉  就剩那一句了 

---

Mike Feng
MSDN Community Support | Feedback to us
Develop and promote your apps in Windows Store
Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Answer 3

var url = window.location.href.toLowerCase(); 
function beginExecute() {

……………………

……………………

}

    window.onload = beginExecute();

直接成为这样？？？？

---

Wer keinen starken Willen hat, kann nie eine hohe Intelligenz erreichen.

Answer 4

Hi Solok,

从你给出的代码来看 就是这样的。

---

Mike Feng
MSDN Community Support | Feedback to us
Develop and promote your apps in Windows Store
Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Answer 5

(url.indexOf("zh-tw.facebook.com") >= 0 || url.indexOf("www.facebook.com") >= 0 || url.indexOf("/search") >= 0 || url.indexOf("/url") >= 0)

这段都不要了？？？我震惊了

---

Wer keinen starken Willen hat, kann nie eine hohe Intelligenz erreichen.

Answer 6

if (url.indexOf("zh-tw.facebook.com") >= 0 || url.indexOf("www.facebook.com") >= 0 || url.indexOf("/search") >= 0 || url.indexOf("/url") >= 0) { 
    window.onload = beginExecute();
}

---

Mike Feng
MSDN Community Support | Feedback to us
Develop and promote your apps in Windows Store
Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Answer 7

var isChrome = navigator.userAgent.indexOf("AppleWebKit") != -1;
var isFirefox = navigator.userAgent.indexOf("Firefox") != -1;

开头的这两句到底要不要？？

---

Wer keinen starken Willen hat, kann nie eine hohe Intelligenz erreichen.

Answer 8

var isChrome = navigator.userAgent.indexOf("AppleWebKit") != -1;
var isFirefox = navigator.userAgent.indexOf("Firefox") != -1;

开头的这两句到底要不要？？

---

Wer keinen starken Willen hat, kann nie eine hohe Intelligenz erreichen.

不要

---

Mike Feng
MSDN Community Support | Feedback to us
Develop and promote your apps in Windows Store
Please remember to mark the replies as answers if they help and unmark them if they provide no help.