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有大佬遇到過這個問題嗎：JavaScript求一返回方法感激不盡

JavaScript

BIG陽 2019-10-25 23:46:27

functionreturnIt(code){//returnobj}通過已知value（編碼）返回對象e.g.returnIt('000003');返回{value:'000003',label:'渭南市',isLeaf:true}constcityList=[{label:'全國',value:'000000',children:[{label:'陜西省',value:'000001',children:[{value:'000002',label:'西安市',isLeaf:true},{value:'000003',label:'渭南市',isLeaf:true},],},{label:'上海',value:'000005',isLeaf:true},{label:'北京',value:'000006',isLeaf:true},{label:'河南省',value:'000007',children:[{value:'000008',label:'信陽',isLeaf:true},{value:'000009',label:'周口',isLeaf:true},{value:'000010',label:'其他',isLeaf:true},],},{label:'山東省',value:'000011',children:[{value:'000012',label:'棗莊',isLeaf:true},{value:'000013',label:'煙臺',isLeaf:true},{value:'000014',label:'淄博',isLeaf:true},],},]}];

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2 回答

MYYA

TA貢獻1868條經驗獲得超4個贊

簡單遞歸一下就行了functionreturnIt(code,list){for(letitemoflist){if(item.value===code)returnitem;if(item.children){constchild=returnIt(code,item.children);if(child)returnchild;}}}因為是純函數(shù)，調用需把cityList作為參數(shù)傳遞進去constresult=returnIt('000003',cityList);console.log(result);

反對回復 2019-10-25

qq_笑_17

TA貢獻1818條經驗獲得超7個贊

functiongetReturnIt(arr,value){letnewarr=arr;letcurr=null;while(newarr.length>0){curr=newarr.shift();if(value===curr.value){returncurr}if(curr.children){newarr.push(...curr.children)}}}console.log(getReturnIt(cityList,'000008'))