javascript - 如何仅解析 JSON 中的某些属性和值

Question

我正在尝试解析 JSON。下面的例子，

[
{
    "id": "(error)",
    "raw": "Expected an assignment or function call and instead saw an expression.",
    "code": "W030",
    "evidence": "v",
    "line": 1,
    "character": 1,
    "scope": "(main)",
    "reason": "Expected an assignment or function call and instead saw an expression."
  },
  {
    "id": "(error)",
    "raw": "Missing semicolon.",
    "code": "W033",
    "evidence": "v",
    "line": 1,
    "character": 2,
    "scope": "(main)",
    "reason": "Missing semicolon."
  }
] 

我只需要打印如下内容:

• 原因 1:期待一个赋值或函数调用，但却看到了一个表达。
• 原因 2:缺少分号。

我有一个 DEMO .我怎样才能只解析“原因”属性/值以及它发生了多少次？

Answer 1

如果你想打印错误试试这个:

Javascript

$(document).ready(function(){
    $("#js").keyup(function(){
        jsSource = $("#js").val();
        JSHINT(jsSource);
        result = JSON.stringify(JSHINT.errors, null, 2);
        //storage for reasons
        var errors = [];
        for(var i = 0; i < JSHINT.errors.length; i++){
            //reason collecting
            errors.push((i + 1) + ') ' + JSHINT.errors[i].reason);
        }
        //print reasons
        document.getElementById('output').innerHTML = errors.join(', ');
    });
});