String.prototype.split(';')
to separate key-value pairs from each other.Array.prototype.map()
and String.prototype.split('=')
to separate keys from values in each pair.Array.prototype.reduce()
and decodeURIComponent()
to create an object with all key-value pairs.const parseCookie = str => str .split(';') .map(v => v.split('=')) .reduce((acc, v) => { acc[decodeURIComponent(v[0].trim())] = decodeURIComponent(v[1].trim()); return acc; }, {});
parseCookie('foo=bar; equation=E%3Dmc%5E2'); // { foo: 'bar', equation: 'E=mc^2' }
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