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snippets/js/s/zip-object.md

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+---
+title: Group array into object
+type: snippet
+language: javascript
+tags: [array,object]
+cover: baloons-field
+dateModified: 2020-10-22T20:24:44+03:00
+---
+
+Associates properties to values, given array of valid property identifiers and an array of values.
+
+- Use `Array.prototype.reduce()` to build an object from the two arrays.
+- If the length of `props` is longer than `values`, remaining keys will be `undefined`.
+- If the length of `values` is longer than `props`, remaining values will be ignored.
+
+```js
+const zipObject = (props, values) =>
+  props.reduce((obj, prop, index) => ((obj[prop] = values[index]), obj), {});
+```
+
+```js
+zipObject(['a', 'b', 'c'], [1, 2]); // {a: 1, b: 2, c: undefined}
+zipObject(['a', 'b'], [1, 2, 3]); // {a: 1, b: 2}
+```