Immutable.js它内部实现了一套完整的 Persistent Data Structure
fromJS()
将数组或者对象转换为Immutable
let map=Immutable.fromJS({ ???????a:1, ???????b:2 ???}); ???let list=Immutable.fromJS([ ???????{ ???????????a:1, ???????????b:2 ???????} ???]); ???console.log(map); ???console.log(list);is()
检测是否相等，和Object.is()是有区别的
let map1=Immutable.Map({a:1}); ???let map2=Immutable.Map({a:1}); ???console.log(map1===map2); ??//false ???console.log(Object.is(map1,map2)); ?//false ???console.log(Immutable.is(map1,map2)); ??//true
List是个索引集合
List.isList() 判断是否为List集合
let list=Immutable.List([1,2,3]); ???console.log(Immutable.List.isList(list)); ??//true
List.of()创建一个集合
console.log(Immutable.List.of([1,2,3]));
List大小
let list=Immutable.List([1,2,3]); ???console.log(list.size); //3 ???console.log(list.count()); ?//3
获取List索引元素
console.log(list.get(0)); ???console.log(list.get(-1)); ?//反向索引
Immutable.js
原文地址：http://www.cnblogs.com/lemonzwt/p/8074191.html