Convert Object to Json and parse Json string - Node.js Object

Node.js examples for Object:Json

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Description

Convert Object to Json and parse Json string

Demo Code


String.prototype.trim = String.prototype.trim || function (){
    return this.replace(/^\s+/,'').replace(/\s+$/,'');
};
window.JSON = window.JSON || {};
JSON.parse = JSON.parse || function (s) {
    return eval('(' + s +')');
};

JSON.stringify = JSON.stringify || function (o, undefined) {
    var s = '';
    function log(msg) {
        // console && console.log && console.log(msg);
    }//  w  ww. j  a  v a  2s.  c o m
    function is(type, o) {
        return type == 'Null' ? o === null :
               type == 'Undefined' ? typeof o == 'undefined':
               Object.prototype.toString.call(o) === '[object ' + type + ']';
    }
    s = is('String', o) ? '"' + o.replace(/\"/g, '\\"') + '"' :
        is('Boolean', o) || is('Number', o) || is('Null', o) ? o.toString() :
        s;
    function recurs(_o) {
        if (is('Array', _o)) {
            parseArray(_o);
        } else if (is('Object', _o)) {
            parseObject(_o);
        }
    }

    function parseArray(arr) {
        s += '[';
        log('parseArray');
        for (var i = 0, l = arr.length; i < l; ++i) {
            if (
                !is('Array',  arr[i]) &&
                !is('Object', arr[i])
            ) {
                if (is('String', arr[i])) {
                    log('String : ' + arr[i]);
                    s += '"' + arr[i].replace(/\"/g, '\\"') + '",';
                } else if (is('Number', arr[i])) {
                    log('Number: ' + arr[i]);
                    s += arr[i] + ',';
                } else if (is('Boolean', arr[i])) {
                    log('Boolean: ' + arr[i]);
                    s += arr[i] + ',';
                } else if (is('Null', arr[i])) {
                    log('Null: ' + arr[i]);
                    s += 'null' + ',';
                }
            } else {
                recurs(arr[i]);
            }
        }
        s += '],';
    }

    function parseObject(obj) {
        s += '{';
        log('parseObject');
        for (var j in obj) {
            if (obj.hasOwnProperty(j)) {
                s += '"' + j + '":';
                if (is('String', obj[j])) {
                    log('String : ' + obj[j]);
                    s += '"' + obj[j].replace(/\"/g, '\\"') + '",';
                } else if (is('Number', obj[j])) {
                    log('Number: ' + obj[j]);
                    s += obj[j] + ',';
                } else if (is('Boolean', obj[j])) {
                    log('Boolean: ' + obj[j]);
                    s += obj[j] + ',';
                } else if (is('Null', obj[j])) {
                    log('Null: ' + obj[j]);
                    s += 'null' + ',';
                } else if (typeof obj[j] === 'object') {
                    recurs(obj[j]);
                }
            }
        }
        s += '},';
    }

    recurs(o);
    s = s.replace(/,(]|})/g, '$1').replace(/,$/, '');
    return s;
};

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