Alternative for eval to get array object from a string where JSON.parse is not working

Question

window.eval("['bcs/abc/xyz.pdf', 'bcs/abc/xyz.pdf']"); gives output array object with urls how to do this without using eval, any elegant solution? Json.parse is not working in this scenario.

If your array elements would be enclosed in double quotes, then you could use JSON.parse('["bcs/abc/xyz.pdf", "bcs/abc/xyz.pdf"]') — Justinas
– Justinas, Commented Oct 1, 2020 at 7:54
JSON.parse is not working because it's not valid JSON. The most elegant solution is to make sure whatever is producing that value is producing valid JSON. Post-fixing the wrong data is pretty much always the wrong approach. — VLAZ
– VLAZ, Commented Oct 1, 2020 at 7:54
this is not JSON encoded string. you directly put an array in ' quote. — bhumin
– bhumin, Commented Oct 1, 2020 at 7:59

mplungjan · Accepted Answer · 2020-10-01 08:11:08Z

1

You really need to fix the server, but if you cannot then

const getArr = str => JSON.parse(
  `{"arr":${
  str.replace(/'/g,'"')
  }}`
)["arr"];
  
const arr = getArr(`['bcs/abc/xyz.pdf', 'bcs/abc/xyz.pdf']`)
console.log(arr)

answered Oct 1, 2020 at 8:11

mplungjan

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Aren Hovsepyan · Accepted Answer · 2020-10-01 08:24:08Z

0

You can try to parse it manually using regex

"['bcs/abc/xyz.pdf', 'bcs/abc/xyz.pdf']".replace(/^\[|"|'|\]$/g, '').split(/,\s?/)

Here regex used to replace brackets, after which you can split it using comma and zero or multiple white spaces as separator.

answered Oct 1, 2020 at 8:24

Aren Hovsepyan

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