首頁猿問 js 怎么將數(shù)組按照一定條件分組

js 怎么將數(shù)組按照一定條件分組

JavaScript

素胚勾勒不出你 2019-05-11 09:34:08

得到數(shù)組：this.dataBarrage=res.listlist:[0:{id:"1",content:"ddddd",percent:"60"}1:{id:"1",content:"ddddd",percent:"30"}2:{id:"2",content:"葫蘆娃",percent:"0"}3:{id:"3",content:"本領(lǐng)大",percent:"10"}4:{id:"4",content:"Qwery",percent:"0"}比如我在界面上獲取的一個(gè)高度值為20，那么我怎么獲取這個(gè)數(shù)組里面percent的值為10-30范圍的值，就是我要根據(jù)我的高度將這個(gè)數(shù)組分組。這個(gè)高度值已經(jīng)獲取為this.scrollStop。怎么根據(jù)這個(gè)高度值計(jì)算this.scrollStop-10到this.scrollStop+10得到這個(gè)范圍里面的數(shù)組？

查看完整描述

2 回答

繁星coding

TA貢獻(xiàn)1797條經(jīng)驗(yàn) 獲得超4個(gè)贊

遍歷這個(gè)對(duì)象數(shù)組,用array.filter就可以了letlist=[{id:"1",content:"ddddd",percent:"60"},{id:"1",content:"ddddd",percent:"30"},{id:"2",content:"葫蘆娃",percent:"0"},{id:"3",content:"本領(lǐng)大",percent:"10"},{id:"4",content:"Qwery",percent:"0"},]letheight=20list=list.filter(e=>{returnparseInt(e.percent)<=(height+10)&&parseInt(e.percent)>=(height-10)})console.log(list)

反對(duì) 回復(fù) 2019-05-11

ibeautiful

TA貢獻(xiàn)1993條經(jīng)驗(yàn) 獲得超6個(gè)贊

varlist=[{id:"1",content:"ddddd",percent:"60"},{id:"1",content:"ddddd",percent:"30"},{id:"2",content:"葫蘆娃",percent:"0"},{id:"3",content:"本領(lǐng)大",percent:"10"},{id:"4",content:"Qwery",percent:"0"},{id:"5",content:"ddddd",percent:"80"},{id:"6",content:"ddddd",percent:"90"},{id:"7",content:"ddddd",percent:"50"},]functionsearch(data,key,offset,val){varnewArr=[];for(vari=0;ivark=parseInt(data[i][key]);if(val>=(k-offset)&&val<=(k+offset))newArr.push(data[i]);}returnnewArr;}search(list,'percent',10,20);//數(shù)據(jù)字段偏差范圍給出的值