Actually I'm getting the arraylist from android device in node.js . But as it's in string form so I wanna convert it into an array . For that I've referred a lot of similar questions in SO but none of them were helpful . I also tried to use JSON.parse() but it was not helpful.
I'm getting societyList in form '[Art, Photography, Writing]'.Thus how to convert this format to an array?
Code:
var soc_arr=JSON.parse(data.societyList)
console.log(soc_arr.length)
use something like this
var array = arrayList.replace(/^\[|\]$/g, "").split(", ");
After @drinchev suggestion regex used.
regex matches char starts with '[' and ends with ']'
list.replace(/^\[|\]$/, "").split( ", " ); :)
list.replace(/^\[|\]$/g, "").split( ", " )
["Hello, World", "Hi"]var array = arrayList.replace(/^\["|"\]$/g, "").split('", "'); should fix it (for valid JSON), but as someone pointed out the example string is not valid jsonThis string is not valid JSON since it does not use the "" to indicate a string.
The best way would be to parse it yourself using a method like below:
let data = '[test1, test2, test3]';
let parts = data
.trim() // trim the initial data!
.substr(1,data.length-2) // remove the brackets from string
.split(',') // plit the string using the seperator ','
.map(e=>e.trim()) // trim the results to remove spaces at start and end
console.log(parts);RegExp.match() maybe
console.log('[Art, Photography, Writing]'.match(/\w+/g))So match() applies on any string and will split it into array elements.
Use replace and split. In addition, use trim() to remove the trailing and leading whitespaces from the array element.
var str = '[Art, Photography, Writing]';
var JSONData = str.replace('[','').replace(']','').split(',').map(x => x.trim());
console.log(JSONData);
societyListlike'["Art", "Photography", "Writing"]'thenJSON.parse()should work fine