[英]javascript regex to allow at least one special character and one numeric
[英]javascript regex for at least x numeric characters
一個正則表達式,表明一個字符串中至少有10個數字字符。
可以超過10,但不能少於10。 隨機位置可以有任意數量的其他字符,以數字分隔。
示例數據:
(123) 456-7890
123-456-7890 ext 41
1234567890
etc.
去除所有非數字字符並計算剩余的數量可能是最簡單的:
var valid = input.replace(/[^\d]/g, '').length >= 10
注意: .replace
不會修改原始字符串。
為了確保至少有10位數字存在此正則表達式:
/^(\D*\d){10}/
碼:
var valid = /^(\D*\d){10}/.test(str);
測試:
console.log(/^(\D*\d){10}/.test('123-456-7890 ext 41')); // true
console.log(/^(\D*\d){10}/.test('123-456-789')); // false
說明:
^ assert position at start of the string
1st Capturing group (\D*\d){10}
Quantifier: Exactly 10 times
Note: A repeated capturing group will only capture the last iteration.
Put a capturing group around the repeated group to capture all iterations or use a
non-capturing group instead if you're not interested in the data
\D* match any character that's not a digit [^0-9]
Quantifier: Between zero and unlimited times, as many times as possible
\d match a digit [0-9]
(\d\D*){10}
一個數字后跟任意數量的非數字十次。
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