【筆記】JavaScript編碼規範- 逗號和分號
阿新 • • 發佈:2019-01-23
不要再語句前面使用逗號。
// bad
var story = [
once
, upon
, aTime
];
// good
var story = [
once,
upon,
aTime
];
不要有多餘逗號:這會在IE6、IE7和IE9的怪異模式中導致一些問題;同時,在ES3的一些實現中,多餘的逗號會增加陣列的長度。在ES5中已經澄清(source)
分號使用示例。// bad var hero = { firstName: 'Kevin', lastName: 'Flynn', }; var heroes = [ 'Batman', 'Superman', ]; // good var hero = { firstName: 'Kevin', lastName: 'Flynn' }; var heroes = [ 'Batman', 'Superman' ];
// bad
(function() {
var name = 'Skywalker'
return name
})()
// good
(function() {
var name = 'Skywalker';
return name;
})();
1:13 And the evening and the morning were the third day.