摘要：function getFanzhuan (arr){ if(arr instanceof Array){ var a = null var b = null var c = null if(arr.length%2 == 0){ a = arr.slice(0,arr.length/2) b = 阅读全文

摘要：var obj = { name : '张三', age:'25'}obj[Symbol.iterator] = function(){ var index = 0 var _this = this var keys = Object.keys(_this) var length = keys.le 阅读全文

摘要：方法一： var newArr = []var arr = [1,2,3,1,2,1] for(var i=0;i<arr.length;i++){ for(var j=i+1;j<arr.length;j++){ if(arr[i] arr[j]){ i++ j=i } } newArr.push 阅读全文