Javascript 如何自动执行javascript？
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how do I automatically execute javascript?
提问by Sarfraz
how do I automatically execute javascript?
如何自动执行javascript？
I know of <body onLoad="">, but I just thought maybe there is another way to do it?
我知道<body onLoad="">，但我只是想也许还有另一种方法可以做到？
html:
html：
<html><head></head><body><div id="test"></div></body></html>
javascript:
javascript:
<script>(function(){var text = document.getElementById('test').innerHTML;var newtext = text.replace('', '');return newtext;})();</script>
I wanna get the text within "test", replace certain parts, and then output it to the browser.
我想在“测试”中获取文本，替换某些部分，然后将其输出到浏览器。
Any ideas on how to do it? I'd appreciate any help. Thanks.
关于如何做到这一点的任何想法？我很感激任何帮助。谢谢。
回答by Sarfraz
If you don't want to use <body onload>which is good choice in terms of obtrusivejavascript, you can separate that and put you code like this:
如果您不想使用<body onload>哪个是突兀的javascript方面的好选择，您可以将其分开并放置如下代码：
window.onload = function(){
// your code here
};
Alternative:
选择：
Place your javascript code at the bottom of the page.
将您的 javascript 代码放在页面底部。
回答by Sky Sanders
Place the script at the bottom of the page, outside the closing body tag..
将脚本放在页面底部，结束正文标记之外。
回答by user2993258
It's REALLY easy! If you have a script in your "head" block, with no function id, it will run automatically as soon as the web page loads. For example:
这真的很容易！如果您的“head”块中有一个没有函数 id 的脚本，它会在网页加载后立即自动运行。例如：
<head><meta charset="UTF-8"><title>Redirection to www.mywebsite.org</title>
<head><meta charset="UTF-8"><title>Redirection to www.mywebsite.org</title>
<!-- This script initiates an automatic web page redirection, as the page is loaded -->
<script type="text/javascript">
window.location = "http://www.mywebsite.com/"
</script>
</head>
</head>
回答by rochal
If you don't want to use jQuery, use native window.onload method:
如果您不想使用 jQuery，请使用原生 window.onload 方法：
<script type="text/javascript">
function ReplaceText() {
document.getElementById('test').innerHTML = document.getElementById('test').innerHTML.replace(/abc/g, "def");
}
window.onload = ReplaceText;
</script>
Used on the code:
在代码上使用：
<div id="test">abc abc</div>
Will give this output:
将给出这个输出：
def def
回答by Dan Diplo
A quick way, if you just want to debug, would be move what you want to execute outside of a function.
如果您只想调试，一种快速的方法是将要执行的内容移到函数之外。
<script type="text/javascript">
var text = document.getElementById('test').innerHTML;
var newtext = text.replace('', '');
alert(newtext);
</script>
NB. I'm not sure what you hope to achieve with text.replace('', '')?
注意。我不确定你希望实现text.replace('', '')什么？
