Benchmark: JSON.stringify, string concat, template string, join, plus

Script Preparation code:

var stringArray = Array.from({
    length: 1000
}).map(() => Math.random().toString())

Tests:

stringify
let str = JSON.stringify(stringArray);
join
let str = stringArray.join();
concat
let str = ""; for (let i = 0; i < stringArray.length; i++) str = str.concat(stringArray[i]);
string add
let str = ""; for (let i = 0; i < stringArray.length; i++) str = str+stringArray[i];
string template
let str = ""; for (let i = 0; i < stringArray.length; i++) str = `${str},${stringArray[i]}`;

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0

Browser/OS: Firefox 91 on Ubuntu

JSON.stringify, string concat, template string, join, plus (version: 0)