大佬们遇到过这个问题吗？字符串数组逐级替换问题跪求！

Question

目标是把每个元素中的null字符串替换成下个元素，最终得到一个替换好的字符串。相关代码//list数组如下varlist=["data:{null}","item:(payload.data.listmap(value0,index0)->{null})","gradeList:(value0.gradeListmap(value1,index1)->{null})","otherList:(value1.otherListmap(value2,index2)->{null})","anotherList:(value2.anotherListmap(value3,index3)->{null})"]所需结果是一个字符串"data:{item:(payload.data.listmap(value0,index0)->{gradeList:(value0.gradeListmap(value1,index1)->{otherList:(value1.otherListmap(value2,index2)->{anotherList:(value2.anotherListmap(value3,index3)->{null})})})})}"

Answer 1

for(leti=list.length-2;i>=0;i--){
list[i]=list[i].replace(/{\s*null\s*}/,`{\n${"\t".repeat(i)}${list[i+1]}}`);
}
                            

Answer 2

for(vari=list.length-1,str='';i>=0;i--){
(obj=list[i].replace(/null/,str),str=obj);
}
console.log(str);