[英]ng-pattern to allow alpha and certain special characters
In form - name field I want to do a validation against 在表单-名称字段中,我要针对
_ \\ / - . '
_ \\ / - . '
_ \\ / - . '
I tried, 我试过了,
ng-pattern="/^[a-z]+[_+\+/+-+.+’][a-z]*$/"
Looks like I have missed out something as its not working! 好像我错过了一些东西,因为它不起作用!
Let's see: 让我们来看看:
[a-zA-Z]
[a-zA-Z]
[ ]
or \\s
[ ]
或\\s
_ \\ / - . ' '
_ \\ / - . ' '
_ \\ / - . ' '
=> [_\\\\\\/.''-]
_ \\ / - . ' '
=> [_\\\\\\/.''-]
So, combining all that, the pattern will look like: 因此,结合所有这些,模式将如下所示:
ng-pattern="/^[a-zA-Z _\\\/.’'-]+$/"
This matches 1 or more ( +
) chars from the allowed set. 这会匹配允许集中的1个或更多(
+
)字符。
To disallow leading/trailing whitespace, use 要禁止前导/尾随空格,请使用
ng-pattern="/^[a-zA-Z_\\\/.’'-]+(?: +[A-Za-z_\\\/.’'-]+)*$/" ng-trim="false"
See the regex demo 见正则表达式演示
The ng-trim="false"
will prevent from trimming the input sent to the regex engine. ng-trim="false"
将阻止修剪发送到正则表达式引擎的输入。 The new regex will match: 新的正则表达式将匹配:
^
- start of string ^
-字符串的开头 [a-zA-Z_\\\\\\/.''-]+
- 1 or more letters or allowed symbols other than space [a-zA-Z_\\\\\\/.''-]+
-1个或多个字母或除空格以外的允许符号 (?: +[A-Za-z_\\\\\\/.''-]+)*
- zero or more sequences of: (?: +[A-Za-z_\\\\\\/.''-]+)*
-零个或多个序列:
+
- (or, \\s+
) - 1 or more spaces (whitespaces) +
-(或\\s+
)-1个或多个空格(空格) [A-Za-z_\\\\\\/.''-]+
- see above [A-Za-z_\\\\\\/.''-]+
-参见上文 $
- end of string. $
-字符串结尾。 /^([az _\\/.'-])+$/i
would do. /^([az _\\/.'-])+$/i
可以。 If you want any space character instead of just space, use /(^[a-z_\\/.'-]|\\s)+$/i
. 如果要使用空格字符而不是空格,请使用
/(^[a-z_\\/.'-]|\\s)+$/i
。
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