在Javascript中提取字符串中的字符数组

Question

I've looked around and practiced my RegEx but I still can't get it right... Probably a noob question How would I split a string to only keep the words (a to z) and only them, split by any other character?

hello3you ?! hey 32 foo

would return

["hello","you","hey","foo"]

I tried the following, no luck:

var words = itemObject["name"].toLowerCase().split(/^([a-z]+)/g);
var words = itemObject["name"].toLowerCase().split(/[a-zA-Z]+/g);

Thanks

Answer 1

Instead of splitting you should think of it as a matching operation; after all, the title of your question is about extracting strings:

'hello3you ?! hey 32 foo'.match(/[a-z]+/ig);

This will return an array of strings matching a "bunch of letters".

Answer 2

[^a-z]+

您可以以此分割以获得所需的结果。

Answer 3

I'd suggest:

 var matches = "hello3you ?! hey 32 foo!".split(/[^az]+/).filter(function(el) { if (el.length) { return el; } }); console.log(matches); 

• [^az] is a range of characters that are not az (inclusive),
• + requires a match of one, or more, of those characters.

Answer 4

试试： var words = itemObject["name"].toLowerCase().split(/([^az]+)/);

Answer 5

Working:

var words = itemObject["name"].match(/[az]+/ig);

Output:

hello,you,hey,foo