随笔分类 - es6
摘要:方法一: var arr=[1,3,1,4,2,2,1]; let result=Array.from(new Set(arr)); console.log(result); 方法二: var arr=[1,3,1,4,2,2,1]; var result=[]; arr.forEach(funct
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摘要:方法一: var arr=[1,2,3,4,5,6]; arr.forEach((value,index)=>{ if(value>3){ arr.splice(index,value) } }) console.log(arr); 方法二: var arr=[1,2,3,4,5,6]; arr.m
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摘要://计算数组中每个元素出现的次数 var arr = ["apple","orange","apple","orange","pear","orange"]; function getWordCnt(){ return arr.reduce(function(prev,next){ prev[nex
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