问题描述
|||COVID HPI^^^FEVER^^^Low Grade
|||COVID HPI^^^FEVER^^^Continuous
|||COVID HPI^^^RHInorRHEA/SNEEZING^^^No
|||GENERAL EXAM^^^CL^^^ConscIoUs
|||GENERAL EXAM^^^ORIENTED^^^Yes
我想将其转换为如下形式:
{
"COVID HPI": [
{
"FEVER": "Low Grade,Continuous","RHInorRHEA/SNEEZING": "Yes"
}
],"GENERAL EXAM": [
{
"CL": "ConscIoUs","ORIENTED": "Yes"
}
]
}
没有丑陋的代码,我将无法超越:
const na = [];
fetch('http://localhost/test/json/newdata.json')
.then(response => {
let vv = response.json();
return vv;
})
.then(function(data){
console.log(data[0]['tRxVal'])
let nav = data[0]['tRxVal'].slice(3).split('|||');
let nbv = nav.map(function(item,i){
return item.split('^^^');
});
//console.log(nbv);
nbv.forEach(function(v,i){
if(!na.includes(v[0])){
na.push(v[0]);
}
})
console.log(na)
})
.catch(err => {
// handle errors
});
有人可以帮我吗 谢谢
解决方法
您应该尝试使用split
函数。
您可以先对"|||"
的字符串进行拆分,然后再对"^^^"
的所有结果字符串进行拆分,以便可以拆分键和值。
类似的东西(将其作为伪代码)
let strings = data.split("|||");
for (string in strings){
let objectKeyValue = string.split("^^^");
let object = objectKeyValue[0];
let key = objectKeyValue[1];
let value = objectKeyValue[2];
}
从这里开始,构成您的对象,您就很好了。
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/split
,以|||
分隔以获取每一行,然后以^^^
分隔每一行。然后,您可以这样思考每个“行”:<topLevelCategory>^^^<subCategory>^^^<subCategoryAnswer>
。使用每一行的这种思维模型来构建对象。
const string = `|||COVID HPI^^^FEVER^^^Low Grade
|||COVID HPI^^^FEVER^^^Continuous
|||COVID HPI^^^RHINORRHEA/SNEEZING^^^No
|||GENERAL EXAM^^^CL^^^Conscious
|||GENERAL EXAM^^^ORIENTED^^^Yes`;
function stringToObj(str) {
const branches = str.split('|||');
const obj = {};
branches.forEach((branch) => {
const leaves = branch.split('^^^');
const [top,sub,answer] = leaves;
if (top) {
if (!obj[top]) obj[top] = {};
const trimmedAnswer = answer.trim();
const curr = obj[top][sub];
if (curr) {
obj[top][sub] = `${curr},${trimmedAnswer}`;
} else {
obj[top][sub] = answer.trim();
}
}
});
return obj;
}
console.log(stringToObj(string));