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
你可以使用split
参考: http://www.w3schools.com/jsref/jsref_split.asp
“0 1”.split (" ")
其他回答
你可以使用javascript扩展语法将字符串转换为数组。在下面的解决方案中，我删除了逗号，然后将字符串转换为数组。
var string = "0,1"
var array = [...string.replace(',', '')]
console.log(array[0])
如何转换逗号分隔字符串成一个数组在JavaScript?
var string = 'hello, world, test, test2, rummy, words';
var arr = string.split(', '); // split string on comma space
console.log( arr );
//Output
["hello", "world", "test", "test2", "rummy", "words"]
在javascript中使用以下方式转换字符串到数组的更多示例:
Split() -没有分隔符: Split() -空字符串分隔符: Split() -开始/结束的分隔符: 正则表达式分隔符: 捕捉括号: 带有Limit参数的Split() 看看这个链接 = = > https://www.tutsmake.com/javascript-convert-string-to-array-javascript/
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"}"]
分了就分了，人品;
var string = "0,1";
var array = string.split(",");
alert(array[0]);
我删除字符'['，']'并使用'，'进行拆分
let array = stringObject.replace('[','').replace(']','').split(",").map(String);
