标签:font log array try parse 判断 ant var country
1.json对象(数组)转字符串
var b=[ { "CategoryName" : "Beverages", "ProductName" : "Steeleye Stout", "Country" : "UK", "Price" : "1008.0000", "Quantity" : "65" }, { "CategoryName" : "Beverages", "ProductName" : "Laughing Lumberjack Lager", "Country" : "USA", "Price" : "140.0000", "Quantity" : "10" }]; console.log(JSON.stringify(b));
2.json字符串转对象
JSON.parse(jsonstr);
3.判断json是否为空
var a={aa:111,bb:222};
if(JSON.stringify(a) != "{}") 或者利用 Object.keys(a).length>0
json数组则jsArray.length>0;
4.存取值
var a={};
a.aa=111;
a["bb"]=222;
a["List"]=[{aa:111,bb:222},{aa:112,bb:223}];
a["List"][0].aa=113;
a["List"][0]["bb"]=224;
var b=[{aa:111,bb:222},{aa:112,bb:223}];
b[0].aa=114;
b[0]["bb"]=225;
标签:font log array try parse 判断 ant var country
原文地址:https://www.cnblogs.com/pu20065226/p/9804732.html