How to get data from url using java script

Question

0.00/5 (No votes)

See more:

I try to get user name using url parameters(wwww.domain.com/upload.html?user=user1), here my code, i want to show user name in html form input text box... please help me........

HTML

<!DOCTYPE html>
<html>
<head>
<script>
var QueryString = function () {
  // This function is anonymous, is executed immediately and 
  // the return value is assigned to QueryString!
  var query_string = {};
  var query = window.location.search.substring(1);
  var vars = query.split("&");
  for (var i=0;i<vars.length;i++) {
    var pair = vars[i].split("=");
    	// If first entry with this name
    if (typeof query_string[pair[0]] === "undefined") {
      query_string[pair[0]] = pair[1];
    	// If second entry with this name
    } else if (typeof query_string[pair[0]] === "string") {
      var arr = [ query_string[pair[0]], pair[1] ];
      query_string[pair[0]] = arr;
    	// If third or later entry with this name
    } else {
      query_string[pair[0]].push(pair[1]);
    }
  } 
    return query_string;
} 
</script>
</head>
<body>

<center>
<h2>Java Uploader Beta <BR> </h2></center>
<form id="upload_form" enctype="multipart/form-data" method="post">
<label for="user">User:</label>
<input name="user" type="text" id="user"  tabindex="1" value="QueryString.user();" readonly/><br><BR>
<label for="title">Title:</label>
<input type="text" id="title" name="title"  tabindex="1"/><br><BR>
<label for="artist">Artist:</label>
<input type="text" id="artist" name="artist"  tabindex="2"/><br><BR>
<label for="year">Year:</label>
<input type="text" id="year" name="year"  tabindex="3"/><br><BR>
<label for="album">Album:</label>
<input type="text" id="album" name="album"  tabindex="4"/><br><BR>
  <input type="file" accept="audio/*" name="file1" id="file1"><br><BR>
  <input type="button" value="Upload File" onclick="uploadFile()"><BR>
  <progress id="progressBar" value="0" max="100" style="width:300px;"></progress>
  <font color="#FF0000"><h4  id="status"></h4></font>
  <font color="#0099FF"><p id="loaded_n_total"></p></font>
</form>
</body>
</html>

Posted 23-Feb-14 19:43pm

Eranga Supun Gamagedara

Updated 23-Feb-14 19:50pm

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

KumarSundeep · Answer 1 · 2014-02-23T19:59:00

You can use below function in javascript:

C#

function parseURLParams(url) {
    var queryStart = url.indexOf("?") + 1,
        queryEnd   = url.indexOf("#") + 1 || url.length + 1,
        query = url.slice(queryStart, queryEnd - 1),
        pairs = query.replace(/\+/g, " ").split("&"),
        parms = {}, i, n, v, nv;

    if (query === url || query === "") {
        return;
    }

    for (i = 0; i < pairs.length; i++) {
        nv = pairs[i].split("=");
        n = decodeURIComponent(nv[0]);
        v = decodeURIComponent(nv[1]);

        if (!parms.hasOwnProperty(n)) {
            parms[n] = [];
        }

        parms[n].push(nv.length === 2 ? v : null);
    }
    return parms;
}

Use this as:

C#

var urlString = "http://www.SomeUrl.com/bar?a=a+a&b%20b=b&c=1&c=2&d#hash";
    urlParams = parseURLParams(urlString);

that will return a an object

{
  "a"  : ["a a"],     /*return arrays */
  "b b": ["b"],       /* names having special chars */
  "c"  : ["1", "2"]   /* an URL occurs multiple times */
  "d"  : [null]       /* parameters without values set to null  */ 
}

Thereby,

parseURLParams("www.YourUrl?name=something")

Results

{name: ["something"]}