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javascript/snippets/time-taken.md

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+---
+title: Time taken by function
+type: snippet
+tags: [function]
+cover: shelf-plant
+dateModified: 2020-10-22T20:24:30+03:00
+---
+
+Measures the time it takes for a function to execute.
+
+- Use `console.time()` and `console.timeEnd()` to measure the difference between the start and end times to determine how long the callback took to execute.
+
+```js
+const timeTaken = callback => {
+  console.time('timeTaken');
+  const r = callback();
+  console.timeEnd('timeTaken');
+  return r;
+};
+```
+
+```js
+timeTaken(() => Math.pow(2, 10)); // 1024, (logged): timeTaken: 0.02099609375ms
+```