用字符串搜索 JSON 并获取 javascript 中的行号

Question

我有一个 JSON 和一个目标字符串。我想在 JSON 文件中搜索目标字符串的所有键并获取匹配的行号。

{
  "name": "John Doe",
  "age": 30,
  "occupation": "Software Engineer",
  "address": {
    "street": "123 Main Street",
    "city": "Anytown",
    "state": "CA",
    "zip": "98765"
  },
  "phone": {
    "home": "[phone]",
    "mobile": "[phone]"
  },
  "email": "[email protected]"
}

例如，如果我的目标字符串是mobile，那么它应该返回有key mobile的行号，即第13行。

我尝试使用一个简单的 for 循环，但随后我可能需要使用递归，它会变得过于复杂，有什么我可以使用的库吗？

Answer 1

一种方法是找到字符串，然后以这种方式计算它之前的新行数：

let file=`{
  "name": "John Doe",
  "age": 30,
  "occupation": "Software Engineer",
  "address": {
    "street": "123 Main Street",
    "city": "Anytown",
    "state": "CA",
    "zip": "98765"
  },
  "phone": {
    "home": "[phone]",
    "mobile": "[phone]"
  },
  "email": "[email protected]"
}`;
function getLine( match, search ) {
    let index = search.indexOf(match);
    let split = search.substring(0, index);
    let lines = split.split('\n').length;
    console.log( lines );
    return lines;
}
getLine( 'mobile', file );

也在JSFiddle