[英]REGEX-JAVASCRIPT Unable to find pattern
I am trying to figure how I can search for a pattern that gives me only digits or digits followed by only one letter.我试图弄清楚如何搜索只给我数字或数字后跟一个字母的模式。 I know I can use
/\D\g
to find only digits but I dont know how to find digits with only one letter after it.我知道我可以使用
/\D\g
只查找数字,但我不知道如何查找后面只有一个字母的数字。 The letters can only be the following: ['a','A','b','B','c','C','d','D','n','N','e','E','s','S','w','W']
字母只能如下:
['a','A','b','B','c','C','d','D','n','N','e','E','s','S','w','W']
const testPattern = /[A-Za-z][0-9]/
console.log('item_10a_object10a'.pattern(testPattern))
First, you need to group the whole thing with ()
, and end with /g
so it matches multiple groups.首先,您需要用
()
对整个事物进行分组,并以/g
结尾,以便它匹配多个组。
If you want digits first then a number, you need to put the letter block after the numbers: ([0-9][A-Za-z])
如果要先数字后数字,则需要将字母块放在数字后:
([0-9][A-Za-z])
If you want multiple digits to match, you need a +
after the numbers block: [0-9]+
如果要匹配多个数字,则需要在数字块后加一个
+
: [0-9]+
All together: /([0-9]+[A-Za-z])/g
加在一起:
/([0-9]+[A-Za-z])/g
For reference, \d
does the same thing as [0-9]
, so you could do /(\d+[A-Za-z])/g
instead作为参考,
\d
做同样的事情[0-9]
,所以你可以做/(\d+[A-Za-z])/g
代替
LPT: use regex101 to build and test regex queries LPT:使用regex101构建和测试正则表达式查询
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