将带逗号的字符串转换为数组

如何将字符串转换为JavaScript数组?

看看代码:

var string = "0,1";
var array = [string];
alert(array[0]);

在这种情况下，警报显示0,1。如果它是一个数组，它将显示0。如果调用alert(数组[1])，它应该弹出1

是否有机会将这样的字符串转换为JavaScript数组?

当前回答

转换所有类型的字符串

var array = (new Function("return [" + str+ "];")());



var string = "0,1";

var objectstring = '{Name:"Tshirt", CatGroupName:"Clothes", Gender:"male-female"}, {Name:"Dress", CatGroupName:"Clothes", Gender:"female"}, {Name:"Belt", CatGroupName:"Leather", Gender:"child"}';

var stringArray = (new Function("return [" + string+ "];")());

var objectStringArray = (new Function("return [" + objectstring+ "];")());

JSFiddle https://jsfiddle.net/7ne9L4Lj/1/

控制台结果

一些练习不支持对象字符串

- JSON.parse("[" + string + "]"); // throw error

 - string.split(",") 
// unexpected result 
   ["{Name:"Tshirt"", " CatGroupName:"Clothes"", " Gender:"male-female"}", "      {Name:"Dress"", " CatGroupName:"Clothes"", " Gender:"female"}", " {Name:"Belt"",    " CatGroupName:"Leather"", " Gender:"child"}"]

2015-09-18 16:40:31

其他回答

转换所有类型的字符串

var array = (new Function("return [" + str+ "];")());



var string = "0,1";

var objectstring = '{Name:"Tshirt", CatGroupName:"Clothes", Gender:"male-female"}, {Name:"Dress", CatGroupName:"Clothes", Gender:"female"}, {Name:"Belt", CatGroupName:"Leather", Gender:"child"}';

var stringArray = (new Function("return [" + string+ "];")());

var objectStringArray = (new Function("return [" + objectstring+ "];")());

JSFiddle https://jsfiddle.net/7ne9L4Lj/1/

控制台结果

一些练习不支持对象字符串

- JSON.parse("[" + string + "]"); // throw error

 - string.split(",") 
// unexpected result 
   ["{Name:"Tshirt"", " CatGroupName:"Clothes"", " Gender:"male-female"}", "      {Name:"Dress"", " CatGroupName:"Clothes"", " Gender:"female"}", " {Name:"Belt"",    " CatGroupName:"Leather"", " Gender:"child"}"]

2015-09-18 16:40:31

下面是更多“自己试试”的例子。

定义和用法 split()方法用于将字符串拆分为子字符串数组，并返回新数组。

提示:如果使用空字符串(“”)作为分隔符，则字符串在每个字符之间被分割。

注意:split()方法不会改变原始字符串。