Node.js 解析 JSON 数据：从环境搭建到实战代码详解

$ sudo apt-get install nodejs

$ nodejs -v
v0.10.25

{
  "person": {
    "name": "wanger",
    "birth": "1999"
  }
}

#!/usr/bin/nodejs
var cwd = process.argv[1].substring(0, process.argv[1].lastIndexOf("/"));
var fs = require('fs');
 
function load(file, cb) {
        fs.readFile(file, function(err, data) {
                if (err)
                        throw err;
                cb(JSON.parse(data.toString()));
        });
}
 
(function() {
        if (process.argv.length < 2) {
                console.log("usage\n\t" + process.argv[1] + " loadfile");
                return;
        }
        load(process.argv[2], function(obj) {
                console.log("%s\n", obj.person.name);
                console.log("%s\n", obj.person.birth);
        });
})();

$ ./main.js test.json
wanger
1999

const fs    = require('fs');
var jsonfile = fs.readFileSync(__dirname+"/test.json", "utf8");
console.log(jsonfile);

npm install --save-dev jsonplus

var jsonplus = require('jsonplus');
// Parse like you would with JSON.parse
var response = jsonplus.parse(jsonfile);
console.log(response["type"]);

jsonplus.parse(jsonfile)

var resolve = require('jsonplus').resolve
// This will resolve all reference strings on the given object
var object = resolve(AlreadyParsedJSON);
// resolve has a second argument, which provides the context for references
var object = resolve({ full: '{{ first }} {{ last }}' }, { first: 'john', last: 'doe' });
console.log(object) // { full: 'john doe' }