How to fetch and change value using jquery

Question

<form id="target" method="POST" action="">
<input type="hidden" name="item" id="txtEmail"   value='{"_id":"55a0af70b2a45442078b196d","count":1}'>
<input type="hidden" name="redirect" value='true'>
<input type="submit">

I want to change the value of count dynamically using jquery.Any help is accepted.

When you want to change the value of count....On any event or on page redirect or what ? Please specify — Mayank Pathak
– Mayank Pathak, Commented Sep 9, 2015 at 12:30
No way this is not a duplicate of something - search before you post! — lukelazarovic
– lukelazarovic, Commented Sep 9, 2015 at 12:32

Manwal · Accepted Answer · 2015-09-09 12:33:52Z

2

You need to do following steps:

Fetch value from text field
Parse JSON and store in object
Set new value to object
Again set value to text as string

Consider following:

var textVal = $("#txtEmail").val();
var obj = JSON.parse(textVal);
obj.count = 2;//as you want
$("#txtEmail").val(JSON.stringify(obj));

DEMO

edited Sep 9, 2015 at 12:33

answered Sep 9, 2015 at 12:30

Manwal

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5 Comments

user405398 Over a year ago

Almost close :-) beat you in 25 seconds

D4V1D Over a year ago

@xyz: This is not a race. But if it was, you would have won :)

user405398 Over a year ago

@D4V1D: Its not a race. I was just knocked out by the identical code post at the same time :-)

Jai Over a year ago

@xyz you are knocked off because your answer doesn't say anything but a code block. which might be good but other one is better.

user405398 Over a year ago

@Jai I agree. I saw that Manwal putting efforts, so, I counted on him :-)

user405398 · Accepted Answer · 2015-09-09 12:30:34Z

1

$(function() {
  var val = $('#txtEmail').val();
  var valObj = JSON.parse(val);
  valObj.count = 100;//set anything you want
  $('#txtEmail').val(JSON.stringify(valObj));
});

answered Sep 9, 2015 at 12:30

user405398

2 Comments

user405398 Over a year ago

@AbhishekSingh Good Luck :-)

user405398 Over a year ago

@Manwal :thumbs_up: its a win-win for SO :-)

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