摘要：1.通用模式 var getSingle = function( fn ){ var result; return function(){ return result || ( result = fn .apply(this, arguments ) ) } }; 阅读全文

摘要：qq中有10000个好友，每秒中渲染20个好友： var timeChunk = function(arr, fn, count) { var t; var start = function() { for(var i = 0; i < Math.min(count || 1, arr.length 阅读全文

摘要：节流： 1. var throttle = function(fn,delay){ var pre = Date.now(); return function(){ var __me = this; var args = arguments; var now = Date.now(); if(now 阅读全文

摘要：1. const obj1 ={ name:'a' } const obj2 = { name: 'a' } const arr = [1,2,3]; const arr2 = [1,2,3] console.log(obj1 == obj2, arr == arr2)//false,false 2 阅读全文