javascript的toString()

mj4d

来自万能的stackoverflow分享过来
 
var JSON = {};JSON.stringify = JSON.stringify || function (obj) {    var t = typeof (obj);    if (t != "object" || obj === null) {        // simple data type        if (t == "string") obj = '"'+obj+'"';        return String(obj);    }    else {        // recurse array or object        var n, v, json = [], arr = (obj && obj.constructor == Array);        for (n in obj) {            v = obj[n]; t = typeof(v);            if (t == "string") v = '"'+v+'"';            else if (t == "object" && v !== null) v = JSON.stringify(v);            json.push((arr ? "" : '"' + n + '":') + String(v));        }        return (arr ? "[" : "{") + String(json) + (arr ? "]" : "}");    }};var tmp = {one: 1, two: "2"};console.log(JSON.stringify(tmp)); // '{"one":1,"two":"2"}'var obj1 = {"name":"robin", location:{"city":"chengdu","desc":"javaer"}}console.log(JSON.stringify(obj1)); // '{"name":"robin","location":{"city":"chengdu","desc":"javaer"}}'var obj2 = {"name":"robin", location:{"city":"chengdu","job":{"titile":"jee","company":"cccc"}}}console.log(JSON.stringify(obj2)); // '{"name":"robin","location":{"city":"chengdu","job":{"titile":"jee","company":"cccc"}}}'