如果 URL 包含此内容，请在 Javascript 中执行此操作
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If the URL contains this do that in Javascript
提问by Sam
I want to display a certain message on a certain page.
我想在某个页面上显示某个消息。
Suppose the name of the page I want to display something on is called "foo_page.html",
假设我想显示内容的页面名称叫做“foo_page.html”，
How can I do this using javascript?
我怎样才能使用 javascript 做到这一点？
回答by GShenanigan
You can do it like this:
你可以这样做：
if(document.URL.indexOf("foo_page.html") >= 0){
...show your message
}
回答by zaf
The following will show an alert box if the url is something like http://example.com/foo_page.html:
如果 url 类似于http://example.com/foo_page.html，以下将显示一个警告框：
if(location.pathname=="/foo_page.html") alert('hey!');
回答by Gregtheitroade
var index = document.location.lastIndexOf("/");
var filename = document.location.substr(index);
if(filename.indexOf("foo_page.html")>-1){
alert("OK");
}
回答by EAMann
You can use document.locationto figure out what URL the visitor is at.
您可以使用它document.location来确定访问者所在的 URL。
Try this:
尝试这个：
<script type="text/javascript">
var currentPage = document.location.href.substring(document.location.href.lastIndexOf("/")+1, document.location.href.length);
</script>
Your "currentPage" variable should now contain the name of the page you're on. You can use that to select an action.
您的“currentPage”变量现在应该包含您所在页面的名称。您可以使用它来选择一个动作。
回答by meo
var loc = window.location.pathname.split("/"),
size = loc.length
alert(loc[size])
gives you the last part splitted by "/" most of the time the html, php or whatever file. But i would use classes on your body to recognize where you are. Or just check if the element you want to do something with exists on the page. Before you execute your function like this
大多数情况下，最后一部分是由“/”分割的 html、php 或任何文件。但我会使用你身体上的课程来识别你在哪里。或者只是检查页面上是否存在您要对其执行操作的元素。在你像这样执行你的功能之前
function example(element) {
if(getElementById(element).length) {
// now you are sure that a element exists on the page
}else{
return false; //if not just do nothing
}
}
example("myId")
