javascript convert string to multi array array

Question

I have an initial array (users) with multiple (string and numeric) arrays therein:

var users = [
['User: 10792 - Jack',45.7546,-117.807,2,'/res/smR11.gif'], ['User: 11248 - John',38.0867,131.976,3,'/res/smR08.gif']
];

I have a string of data from our server in the current form of:

newData = "['User: 18469 - Gary',-33.9399732539481,151.164383805489,3,'/res/markerw.gif'],['User: 10020 - Robert',40.6437563454472,-73.7593346140851,6,'/res/smR10.gif']";

I erase all existing data with users.length = 0;

I then need to insert the newData into the users array.

NOTE: I can obviously modify the server data into any other format that would be more suitable.

Any help would be greatly appreciated.

You give no enough information. What the language and techonlogy do you use? ASP.NET MVC / Ruby on rails, PHP, etc — alexmac
– alexmac, Commented Oct 25, 2013 at 11:04
JSON would be more suitable. It then would be as as simple as users = JSON.parse(newData) (overwriting, not appending) — Bergi
– Bergi, Commented Oct 25, 2013 at 11:04

rajesh kakawat · Accepted Answer · 2013-10-25 11:12:14Z

2

try something like this

     var users = JSON.parse(newData);

answered Oct 25, 2013 at 11:12

rajesh kakawat

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Community · Accepted Answer · 2017-05-23 12:28:06Z

-1

Your newData string looks very similar to the javascript above it. How about this...

~~users = eval('[' + newData + ']');~~

[EDIT] As Bergi, rajeshkakawat and StephenJames pointed out, eval will work but is less secure.

See: JSON.parse vs. eval()

edited May 23, 2017 at 12:28

CommunityBot

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answered Oct 25, 2013 at 11:08

jozxyqk

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2 Comments

Stephen James Over a year ago

this would work, but use of eval is generally discouraged because it isn't that safe and is also sluggish, JSON.parse would be a more efficient and robust method.

jozxyqk Over a year ago

@user2919549 Given it was actually Stephen's idea, maybe you could upvote one of his answers

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