Learn how to create an Immutable.Map() through plain Javascript object construction and also via array tuples. console.clear(); // Can be an object var map = Immutable.Map({key: "value"}); console.log(map.get("key")); //"value&quo…
Immutable.js offers methods to break immutable structures into subsets much like Array--for instance it has the all powerful slice()--and unlike Array it offers functional methods like take() and skip(). You get the best of both the imperative and fu…
The Immutable.js Map() is analogous to a Javascript Object or Hash since it is comprised of key-value pairs. The Immutable.js List() is analogous to a Javascript Array and contains many of the same native methods. Let's compare the two and dive into…
// 自定义JS Map 函数 function Map() { var map = function (key, value) {//键值对 this.key = key; this.value = value; } var put = function (key, value) {//添加键值对 this.arr[this.arr.length] = new map(key, value); } var remove = function (key) {//删除key="key"的…
js map(Number) All In One map() 方法创建一个新数组,其结果是该数组中的每个元素是调用一次提供的函数后的返回值. let newArray = arr.map(callback(currentValue[, index[, array]]) { // return element for newArray, after executing something }[, thisArg]); arr.map(Constructor) https://developer.…
