I have a string in this format:
var x = "a=1; b=2; c=3; d=4"
and I would like to convert it to an object like this:
var y = {
a: "1",
b: "2",
c: "3",
d: "4"
}
Any ideas how to achieve that?
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So show us what you have tried so farVsevolod Goloviznin– Vsevolod Goloviznin2015-09-10 16:11:15 +00:00Commented Sep 10, 2015 at 16:11
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2i tried x.split(";") wich give me ["a=1", "b=2", "c=3", "d=4"]. and i'm thinking to do another split by "=" for each item in the table... ?Soufiaane– Soufiaane2015-09-10 16:17:05 +00:00Commented Sep 10, 2015 at 16:17
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2And what's wrong with the solution you're talking about?Vsevolod Goloviznin– Vsevolod Goloviznin2015-09-10 16:17:47 +00:00Commented Sep 10, 2015 at 16:17
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1benalman.com/news/2010/03/theres-no-such-thing-as-a-json. You want to create a JavaScript object, not JSON. Either way, simply split the string (multiple times) and create a new object from the parts. What exactly are you having problems with?Felix Kling– Felix Kling2015-09-10 16:21:41 +00:00Commented Sep 10, 2015 at 16:21
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actually, what i'm trying to do is to parse a mail header. here is the function: mailListener.on("mail", function(mail, seqno, attributes){ var dkim = mail.headers["dkim-signature"].split(";") // ..... } since i'm running that in nodejs(asynchronously), it gets messed up as i try to boocle over the table...Soufiaane– Soufiaane2015-09-10 16:29:08 +00:00Commented Sep 10, 2015 at 16:29
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3 Answers
This works in iE9+
var x = "a=1; b=2; c=3; d=4",
y = {};
x.split(';').map(function (i) {
return i.split('=')
}).forEach(function (j) {
y[j[0].trim()] = j[1]
});
If you are using Node.js v4+
let x = "a=1; b=2; c=3; d=4",
y = {}
x.split(';').map(i => i.split('=')).forEach(j => y[j[0].trim()] = j[1])
Comments
You could try this (not bullet proof, refer to comments):
var json, str;
str = 'a=1; b=2; c=3; d=4';
str = str.replace(/\s*;\s*/g, ',');
str = str.replace(/([^,]+)=([^,]+)/g, '"$1":"$2"');
str = '{' + str + '}';
json = JSON.parse(str);
document.write(
'<pre>' + JSON.stringify(json) + '</pre>'
);3 Comments
Soufiaane
i get this error {"v":"1," "a":"rsa-sha256," "c":"simple/simple," "d":"X.XXXXX.XXX ^ SyntaxError: Unexpected string
Felix Kling
You would have to escape any
" that occurs in the value. You also have to make sure to escape any escape sequences that have a special meaning in JSON and any occurrence of \ otherwise. Also this approach will fail if any of the values itself contains a ,.here is what i did and it seems to work fine:
var y = x.split(";");
var obj = {};
for(var i = 0; i < y.length ; i++){
var k = y[i].split("=");
var r = k[0].replace(" ", "");
obj[r] = k[1];
}
console.log(obj);
