jquery - 如何将此列表重新创建为普通逗号分隔？

Question

我有以下字符串

w[]=18&w[]=2&w[]=2[]=2

我想创建一个 jQuery 函数，让它像这样用逗号分隔：

18,2,2,2

Answer 1

采用正则表达式方式，假设示例中的非数字键和数值，我将match()直接使用所有数字。这将返回一个数组，其中包含字符串中所有匹配的数字（不是数字）：

var query_string  = 'w[]=18&w[]=2&w[]=2[]=2';
var numbers_array = query_string.match(/\d{1,}/g);

如果您随后需要 CSV 字符串，则可以使用分隔符join()将数组值：,

var numbers_csv = numbers_array.join(',');

Answer 2

您可以使用String#replace与任何非数字匹配的正则表达式，并删除前导逗号：

var str = "w[]=18&w[]=2&w[]=2[]=2";
str = str.replace(/\D+/g, ',').substring(1);

实例| 资源

Answer 3

UPDATE: It is much easier to just use substring() and split():

var myArray = str.substring(4).split("&w[]=");

(Assuming that the missing &w is a typo!)

• substring(4) thows away the first for characters: w[]=
• split() splits the string into elements using &w[]= as separation string.

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Old solution:

Just find the w[]= occurrences and replace the occurrences with a , using the replace() function

var str="w[]=18&w[]=2&w[]=2[]=2";
var fixedStr=str.replace(/\&/g,",").replace(/\w?\[\]\=/g,"");

To convert the string into an array (I suppose you mean 'array' when you say 'list'), you need to split() it at the ,s:

var myArray = fixedStr.split(",");