const names = 'const names = ["jhon", "anna", "kelvin"]'
how to get the names array so i can loop through it
for example names.forEach(name => console.log(name))
// expected results jhon, anna, kelvin
You could use match()
here to isolate the array, followed by a split()
to obtain a list of names.
var names = 'const names = ["jhon", "anna", "kelvin"]'; var vals = names.match(/\["(.*?)"\]/)[1].split(/",\s*"/).forEach(name => console.log(name));
eval('const names = ["jhon", "anna", "kelvin"]');
for(let name : names)
console.log(name);
You can try this one:
let testCase1 = 'const names = ["jhon", "anna", "kelvin"]'; let testCase2 = 'var names = ["cane", "anna", "abel", 1, {}, []]'; let testCase3 = 'var names = ["cane" "anna", "abel", 1, {}, []]'; function getArrayLikeInsideText(text) { const regex = new RegExp(/\[.*\]/, 'g'); const temp = text.match(regex); let arr; try { arr = JSON.parse(temp); } catch { return undefined; } const gotAnArray = Array.isArray(arr); return gotAnArray? arr: undefined; } console.log(getArrayLikeInsideText(testCase1)); // ["jhon", "anna", "kelvin"] console.log(getArrayLikeInsideText(testCase2)); // ["cane", "anna", "abel", 1, {}, []] console.log(getArrayLikeInsideText(testCase3)); // undefined
You can simply achieve this by using a RegEx
with the help of String.match()
method.
Live Demo :
const names = 'const names = ["jhon", "anna", "kelvin"]'; const a = names.match(/\[.*\]/g)[0]; JSON.parse(a).forEach(name => console.log(name));
\[.*\]
- Including open/close brackets along with the content.
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