javascript 如何在 jquery 就绪函数中获取 URL 参数？

How can I get URL parameter in a jquery ready function?

提问by jini

I have the following:

我有以下几点：

$(document).ready(function() {
window.location.href='http://target.SchoolID/set?text=';
});

So if someone comes to a page with the above mentioned code using a url like:

因此，如果有人使用以下网址访问具有上述代码的页面：

Somepage.php?id=abc123

Somepage.php?id=abc123

I want the text variable in the ready function to read: abc123

我希望就绪函数中的文本变量读取：abc123

Any ideas?

有任何想法吗？

采纳答案by Moin Zaman

you don't need jQuery. you can do this with plain JS

你不需要jQuery。你可以用普通的 JS 做到这一点

function getParameterByName( name ) //courtesy Artem
{
  name = name.replace(/[\[]/,"\\[").replace(/[\]]/,"\\]");
  var regexS = "[\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec( window.location.href );
  if( results == null )
    return "";
  else
    return decodeURIComponent(results[1].replace(/\+/g, " "));
}

and then you can just get the querystring value like this:

然后你可以像这样获取查询字符串值：

alert(getParameterByName('text'));

alert(getParameterByName('text'));

also look here for other ways and plugins: How can I get query string values in JavaScript?

还可以在这里查看其他方法和插件：如何在 JavaScript 中获取查询字符串值？

回答by Patricia

check out the answer to this questions: How can I get query string values in JavaScript?

查看此问题的答案： 如何在 JavaScript 中获取查询字符串值？

that'll give you the value of the id parameter from the query string.

这将为您提供查询字符串中 id 参数的值。

then you can just do something like:

那么你可以做这样的事情：

$(document).ready(function() {
    var theId = getParameterByName( id)
    var newPath = 'http://target.SchoolID/set?text=' + theId
    window.location.href=newPath;
});

回答by ojblass

To help people coming after me that want to have multiple variables and to enhance Moin's answer here is the code for multiple variables:

为了帮助那些想要拥有多个变量的人并增强 Moin 的答案，这里是多个变量的代码：

function getParameterByName( name ) //courtesy Artem
{
  name = name.replace(/[\[]/,"\\[").replace(/[\]]/,"\\]");
  var regexS = "[\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec( window.location.href );
  if( results == null )
    return "";
  else
  {
    if ((results[1].indexOf('?'))>0)
        return decodeURIComponent(results[1].substring(0,results[1].indexOf('?')).replace(/\+/g, " "));
    else
        return decodeURIComponent(results[1].replace(/\+/g, " "));
  }
}