javascript - Decoding '%40' back to '@' using jquery to populate input fields - Stack Overflow

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So I have this jquery script (thanks to a previous member right here) that takes the email or any other query string from the url and populates the value of the respective input fields on the page...

So... the form input is something like:

<input type="text" name="email" >

And the script is...

$(function () {

//grabs the entire query string
var query = document.location.search.replace('?', '');

//extracts each field/value pair
query = query.split('&');

//runs through each pair
for (var i = 0; i < query.length; i++) {

  //splits up the field/value pair into an array
  var field = query[i].split("=");

  //targets the field and assign its value
  $("input[name='" + field[0] + "'], select[name='" + field[0] + "']").val(field[1]);

}

THE PROBLEM: The url is encoded like this...

/?email=some%40email

So in my code, how can I decode the '%40' back to '@' before it populates the values in the input fields? Any guidance?

So I have this jquery script (thanks to a previous member right here) that takes the email or any other query string from the url and populates the value of the respective input fields on the page...

So... the form input is something like:

<input type="text" name="email" >

And the script is...

$(function () {

//grabs the entire query string
var query = document.location.search.replace('?', '');

//extracts each field/value pair
query = query.split('&');

//runs through each pair
for (var i = 0; i < query.length; i++) {

  //splits up the field/value pair into an array
  var field = query[i].split("=");

  //targets the field and assign its value
  $("input[name='" + field[0] + "'], select[name='" + field[0] + "']").val(field[1]);

}

THE PROBLEM: The url is encoded like this...

http://www.example./?email=some%40email.

So in my code, how can I decode the '%40' back to '@' before it populates the values in the input fields? Any guidance?

• javascript
• jquery
• forms
• url
• decode

Share Improve this question Follow asked Aug 4, 2015 at 7:54 AmodAmod 28388 silver badges2020 bronze badges

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2 Answers 2

Sorted by: Reset to default 11

You can use plain javascript

decodeURIComponent('some%40email.')

decodeURIComponent('@')

decodeURIComponent('%40')

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