将数组连接成字符串

Question

I have this:

var myarray = [];
myarray ["first"] = "$firstelement";
myarray ["second"] = "$secondelement";

And I want to get the string:

"first":"$firstelement","second": "$secondelement"

How can I do it?

Answer 1

What you have is invalid (even if it works) , arrays don't have named keys, but numeric indexes.

You should be using an object instead, and if you want a string, you can stringify it as JSON

 var myobject = {}; myobject["first"] = "$firstelement"; myobject["second"] = "$secondelement"; var str = JSON.stringify(myobject); console.log(str) 

Answer 2

First of all, you'd want to use an object instead of an array:

var myarray = {}; // not []
myarray ["first"] = "$firstelement";
myarray ["second"] = "$secondelement";

The easiest way, then, to achieve what you want is to use JSON:

var jsonString = JSON.stringify(myarray);
var arrayString = jsonString.slice(1, -1);

Answer 3

JSON.stringify() method converts a JavaScript value to a JSON string, optionally replacing values if a replacer function is specified, or optionally including only the specified properties if a replacer array is specified.

 var myarray = {}; myarray ["first"] = "$firstelement"; myarray ["second"] = "$secondelement"; console.log(JSON.stringify(myarray)); 

Answer 4

使用JSON.strinify（）

JSON.stringify(item)