Debounce in JavaScript

Waits for the calls to stop before doing anything, which is what a search box wants.

function debounce(fn, wait) {
  let timer = null;
  return function (...args) {
    clearTimeout(timer);
    timer = setTimeout(() => {
      fn.apply(this, args);
    }, wait);
  };
}

Keywords and builtins used here

• function
• let
• return
• this

The run, in numbers

Lines

9

Characters to type

160

Tokens

50

Three-star pace

105 tpm

At the three-star pace of 105 tokens a minute, this run takes about 29 seconds.

Type this snippet

Step 4 of 5 in Composing functions, step 8 of 16 in Functions & patterns.

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