axios源碼小記

cookie

// 比對 cookie 正規表達式
function read(name) {
    var match = document.cookie.match(new RegExp('(^|;\\s*)(' + name + ')=([^;*'));
    return (match ? decodeURIComponent(match[3]) : null);
},
           

promise組織形式

// 封裝promise
var promise = Promise.resolve(target) // target 可以是promise對象也可以不是
// 等價于
var promise = new Promise(resolve => resolve(target))

var promise = Promise.reject(target)
// 等價于
var promise = new Promise((resolve, reject) => reject(target))