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Code Style

  • Tab indentation
  • Single-quotes
  • Semicolon
  • Strict mode
  • No trailing whitespace
  • Variables at the top of the scope
  • Multiple variable statements
  • Space after keywords and between arguments and operators
  • Return early
  • JSHint valid
  • Consistency


'use strict';

function foo(bar, fum) {
    var i, l, ret;
    var hello = 'Hello';

    if (!bar) {

    for (i = 0, l = bar.length; i < l; i++) {
        if (bar[i] === hello) {
            ret += fum(bar[i]);

    return ret;

Read idiomatic.js for general JavaScript code style best practices.

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