在 IE 中绕过 JavaScript 长时间运行警告对话框
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Bypassing JavaScript long running warning dialog in IE
提问by Xi Zhang
I need to run a super long JavaScript on my page. The client is complaining that IE shows a warning dialog for the script being too long. Unfortunately, there is no way we can reduce the length of the script, so I am trying to find a bypass for the problem.
我需要在我的页面上运行一个超长的 JavaScript。客户端抱怨 IE 显示脚本太长的警告对话框。不幸的是，我们没有办法减少脚本的长度，所以我试图找到解决这个问题的方法。
According to Microsoft support website:
根据微软支持网站：
IE tracks the total number of executed script statements and resets the value each time that a new script execution is started, such as from a timeout or from an event handler. It displays a "long-running script" dialog box when that value is over a threshold amount.
IE 跟踪已执行脚本语句的总数，并在每次启动新脚本执行时重置该值，例如超时或事件处理程序。当该值超过阈值时，它会显示一个“长时间运行的脚本”对话框。
However I have tried to use both setInterval() and setTimeout() to break my script into pieces, but none is working. The browser I am using is IE8. My code is as following:
但是，我尝试同时使用 setInterval() 和 setTimeout() 将我的脚本分成几部分，但都没有奏效。我使用的浏览器是IE8。我的代码如下：
<html>
<head>
<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.5.1.min.js"></script>
</head>
<body>
<div id ="test"></div>
<div id ="log"></div>
</body>
<script>
var repeat =0;
function heavyTask(){
if (repeat<50){
y = longRun();
setTimeout("heavyTask()",100);
}else{
$('#test').html("done!");
}
}
function longRun(){
for(var i =0; i<20000;i++){ }
repeat++;
$('#log').append('<div>repeat: '+ repeat +'</div>');
};
$(document).ready(function () {
setTimeout("heavyTask()",100);
});
</script></html>
In order to make the code work, you have to edit Registry, go to HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Styles, and set the DWORD value called "MaxScriptStatements" to 100,000. If the Styles key is not present, create a new key that is called Styles.
为了使代码工作，您必须编辑注册表，转到 HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Styles，并将名为“MaxScriptStatements”的 DWORD 值设置为 100,000。如果 Styles 键不存在，则创建一个名为 Styles 的新键。
Thanks,
谢谢，
采纳答案by Diodeus - James MacFarlane
This processing limit is set by the browser, not JavaScript.
此处理限制由浏览器而非 JavaScript 设置。
You can break your process down into smaller steps.
您可以将流程分解为更小的步骤。
See this question: How can I give control back (briefly) to the browser during intensive JavaScript processing?
回答by Detect
just some syntax errors... http://jsfiddle.net/Detect/HnpCr/3/
只是一些语法错误... http://jsfiddle.net/Detect/HnpCr/3/
