json序列化

Posted 2021-04-30 编程杂技

    var isObject = function(obj) {
        return Object.prototype.toString.call(obj) === '[object Object]';
    }

    var isArray  = function(arr) {
        return Object.prototype.toString.call(arr) === '[object Array]';
    }


function arrSerialize(arr) {
    var res = [];
    if (isObject(arr)) {
        return;
    }
    if (isArray(arr)) {
        for (var i = 0;i<arr.length;i++) {
            if (isArray(arr[i])) {
                res.push(arrSerialize(arr[i]));
            } else {
                res.push(objSerialize(arr[i]));
            }

        }
        return "["+res.join(',')+"]"
    } else {
        if (typeof arr === 'string') {
            return '"'+arr+'"';
        } else if (typeof arr === 'boolean' || arr === null || typeof arr === 'number'){
            return arr;
        } else {
            throw new Error('arguments error');
        }
    }

}

function objSerialize(obj) {
    var res = [];
    if (isArray(obj)) {
        return;
    }
    if (isObject(obj)) {
        for (var key in obj) {
            if (isObject(obj[key])) {
                res.push('"'+key+'"'+":"+objSerialize(obj[key]));
            } else {
                res.push('"'+key+'"'+":"+arrSerialize(obj[key]));
            }

        }
        return "{"+res.join(',')+"}"
    } else {
        if (typeof obj === 'string') {
            return '"'+obj+'"';
        } else if (typeof obj === 'boolean' || obj === null || typeof obj === 'number'){
            return obj;
        } else {
            throw new Error('arguments error');
        }
    }

}
MYJSON = {
    stringify: function(arg) {
        if (isObject(arg)) {
            return objSerialize(arg);
        } else if (isArray(arg)){
            return arrSerialize(arg)
        }
    }
}
console.log(MYJSON.stringify({
    "dependencies": {
        "JSONStream": "~1.3.1",
        "abbrev": "~1.1.1",
        "ansi-regex": "~3.0.0",
        "ansicolors": "~0.3.2",
        "ansistyles": "~0.1.3",
        "aproba": "~1.2.0",
        "archy": "~1.0.0",
        "bin-links": "^1.1.0",
        "bluebird": "~3.5.1",
        "cacache": "~10.0.1",
        "call-limit": "~1.1.0",
        "chownr": "~1.0.1",
        "cli-table2": "~0.2.0",
        "cmd-shim": "~2.0.2",
        "columnify": "~1.5.4",
        "config-chain": "~1.1.11",
        "detect-indent": "~5.0.0",
        "dezalgo": "~1.0.3",
        "editor": "~1.0.0",
        "find-npm-prefix": "~1.0.1",
        "fs-vacuum": "~1.2.10",
        "fs-write-stream-atomic": "~1.0.10",
        "gentle-fs": "^2.0.1",
        "glob": "~7.1.2",
        "graceful-fs": "~4.1.11",
        "has-unicode": "~2.0.1",
        "hosted-git-info": "~2.5.0",
        "iferr": "~0.1.5",
        "inflight": "~1.0.6",
        "inherits": "~2.0.3",
        "ini": "~1.3.4",
        "init-package-json": "~1.10.1",
        "is-cidr": "~1.0.0",
        "lazy-property": "~1.0.0",
        "libnpx": "~9.7.1",
        "lockfile": "~1.0.3",
        "lodash._baseuniq": "~4.6.0",
        "lodash.clonedeep": "~4.5.0",
        "lodash.union": "~4.6.0",
        "lodash.uniq": "~4.5.0",
        "lodash.without": "~4.4.0",
        "lru-cache": "~4.1.1",
        "meant": "~1.0.1",
        "mississippi": "~1.3.0",
        "mkdirp": "~0.5.1",
        "move-concurrently": "^1.0.1",
        "nopt": "~4.0.1",
        "normalize-package-data": "~2.4.0",
        "npm-cache-filename": "~1.0.2",
        "npm-install-checks": "~3.0.0",
        "npm-lifecycle": "~2.0.0",
        "npm-package-arg": "~6.0.0",
        "npm-packlist": "~1.1.10",
        "npm-profile": "~2.0.5",
        "npm-registry-client": "~8.5.0",
        "npm-user-validate": "~1.0.0",
        "npmlog": "~4.1.2",
        "once": "~1.4.0",
        "opener": "~1.4.3",
        "osenv": "~0.1.4",
        "pacote": "^7.0.2",
        "path-is-inside": "~1.0.2",
        "promise-inflight": "~1.0.1",
        "qrcode-terminal": "~0.11.0",
        "query-string": "~5.0.1",
        "qw": "~1.0.1",
        "read": "~1.0.7",
        "read-cmd-shim": "~1.0.1",
        "read-installed": "~4.0.3",
        "read-package-json": "~2.0.12",
        "read-package-tree": "~5.1.6",
        "readable-stream": "~2.3.3",
        "request": "~2.83.0",
        "retry": "~0.10.1",
        "rimraf": "~2.6.2",
        "safe-buffer": "~5.1.1",
        "semver": "~5.4.1",
        "sha": "~2.0.1",
        "slide": "~1.1.6",
        "sorted-object": "~2.0.1",
        "sorted-union-stream": "~2.1.3",
        "ssri": "~5.0.0",
        "strip-ansi": "~4.0.0",
        "tar": "^4.0.2",
        "text-table": "~0.2.0",
        "uid-number": "0.0.6",
        "umask": "~1.1.0",
        "unique-filename": "~1.1.0",
        "unpipe": "~1.0.0",
        "update-notifier": "~2.3.0",
        "uuid": "~3.1.0",
        "validate-npm-package-name": "~3.0.0",
        "which": "~1.3.0",
        "worker-farm": "~1.5.1",
        "wrappy": "~1.0.2",
        "write-file-atomic": "~2.1.0"
      },
      "Image": {
          "Width":  800,
          "Height": 600,
          "Title":  "View from 15th Floor",
          "Thumbnail": {
              "Url":    "http://www.example.com/image/481989943",
              "Height": 125,
              "Width":  "100"
          },
          "IDs": [116, 943, 234, 38793]}})
)