Javascript 拆分空格分隔的字符串并修剪额外的逗号和空格 [英] Javascript Split Space Delimited String and Trim Extra Commas and Spaces

问题描述

我需要拆分关键字字符串并将其转换为逗号分隔的字符串.但是，我需要删除用户已经输入的多余空格和任何逗号.

I need to split a keyword string and turn it into a comma delimited string. However, I need to get rid of extra spaces and any commas that the user has already input.

var keywordString = "ford    tempo, with,,, sunroof";

输出到这个字符串:

ford,tempo,with,sunroof,

我需要结尾的逗号并且在最终输出中没有空格.

I need the trailing comma and no spaces in the final output.

不确定我是否应该使用 Regex 或字符串拆分函数.

Not sure if I should go Regex or a string splitting function.

有人做过这样的事情吗?

Anyone do something like this already?

我需要使用 javascript(或 JQ).

I need to use javascript (or JQ).

编辑(工作解决方案):

EDIT (working solution):

var keywordString = ", ,, ford,    tempo, with,,, sunroof,, ,";

//remove all commas; remove preceeding and trailing spaces; replace spaces with comma

str1 = keywordString.replace(/,/g , '').replace(/^\s\s*/, '').replace(/\s\s*$/, '').replace(/[\s,]+/g, ',');


//add a comma at the end
str1 = str1 + ',';

console.log(str1);

推荐答案

在这两种情况下，您都需要正则表达式.您可以拆分并加入字符串:

You will need a regular expression in both cases. You could split and join the string:

str = str.split(/[\s,]+/).join();

这会拆分并消耗任何连续的空格和逗号.同样，您可以匹配和替换这些字符:

This splits on and consumes any consecutive white spaces and commas. Similarly, you could just match and replace these characters:

str = str.replace(/[\s,]+/g, ',');

对于尾随逗号，只需附加一个

For the trailing comma, just append one

str = .... + ',';

如果前后有空格，则应先删除它们.

If you have preceding and trailing white spaces, you should remove those first.

参考: .split、.replace、正则表达式

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