JavaScript gets the previous page hyperlink URL parameter

The core is the regular

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var url = location.href; Gets the parameter value of the keyword var es=/keyword=/; Es.exec (URL); var Result=regexp.rightcontext;

For example:

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var url = location.href; Get parameter values for PID var es=/pid=/; Es.exec (URL); var Pid=regexp.rightcontext; var aurl = "&pid=" +PID; alert (PID);//Result: &pid=37

example, we operate with & as a delimiter

Example

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function Getargs () { var args = new Object (); var query = location.search.substring (1); Get query string var pairs = Query.split ("&"); Break at Ampersand for (var i = 0; i < pairs.length; i++) { var pos = pairs[i].indexof (' = '); Look for "Name=value" if (pos = = 1) continue; If not found, skip var argname = pairs[i].substring (0,pos); Extract the name var value = pairs[i].substring (pos+1); Extract the value Value = decodeuricomponent (value); Decode it, if needed Args[argname] = value; Store as a property } return args; Return the object }

And then set the location value based on the parameters you get.

This is the current page is actually the same as a page, and of course you can also use Document.referrer

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<script type= "Text/javascript" > var url = window.location; function Geturlparam (url,name) { var pattern = new RegExp ("[?]" + Name + "\= ([^&]+)", "G"); var matcher = pattern.exec (URL); var items = null; if (Matcher!= null) { try{ Items = decodeURIComponent (decodeURIComponent (matcher[1])); }catch (e) { try{ Items = decodeURIComponent (matcher[1]); }catch (e) { Items = matcher[1]; } } } return items; } Alert (Geturlparam (URL, ' type ')); Country Alert (Geturlparam (URL, ' id ')); 12 Alert (Geturlparam (URL, ' page ')); 10 </script>

Code to optimize the

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var url = " Www.111cn.net Aada=adaa&adad=adasd&sdfs=asdad#did ", Reg =/([^\=\?| \&]+) \= ([^\=\&\#]+)/g; var aa = Url.match (reg); Console.log (AA); Url.replace (reg,function ($1,$2,$3) { Console.log ($2+ "=" +$3); });