至少x个数字字符的javascript正则表达式

用于显示字符串中至少有10个数字字符的正则表达式

可以超过10个，但不能少于10个。 在任意位置可以有任意数量的其他字符，用于分隔数字

示例数据：

(123) 456-7890
123-456-7890 ext 41
1234567890
etc.

---

可能最简单的方法是去掉所有非数字字符，然后计算剩余的字符数：

var valid = input.replace(/[^\d]/g, '').length >= 10

---

注意：

.replace

不会修改原始字符串。

可能最简单的方法是去掉所有非数字字符并计算剩余的字符：

var valid = input.replace(/[^\d]/g, '').length >= 10

---

注意：

.replace

不会修改原始字符串。

为确保至少有10位数字，请使用此正则表达式：

/^(\D*\d){10}/

代码：

var valid = /^(\D*\d){10}/.test(str);

console.log(/^(\D*\d){10}/.test('123-456-7890 ext 41')); // true
console.log(/^(\D*\d){10}/.test('123-456-789')); // false

^ 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]

测试：

var valid = /^(\D*\d){10}/.test(str);

console.log(/^(\D*\d){10}/.test('123-456-7890 ext 41')); // true
console.log(/^(\D*\d){10}/.test('123-456-789')); // false

^ 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]

说明：

var valid = /^(\D*\d){10}/.test(str);

console.log(/^(\D*\d){10}/.test('123-456-7890 ext 41')); // true
console.log(/^(\D*\d){10}/.test('123-456-789')); // false

^ 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]

---

为确保至少有10位数字，请使用此正则表达式：

/^(\D*\d){10}/

代码：

var valid = /^(\D*\d){10}/.test(str);

console.log(/^(\D*\d){10}/.test('123-456-7890 ext 41')); // true
console.log(/^(\D*\d){10}/.test('123-456-789')); // false

^ 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]

测试：

var valid = /^(\D*\d){10}/.test(str);

console.log(/^(\D*\d){10}/.test('123-456-7890 ext 41')); // true
console.log(/^(\D*\d){10}/.test('123-456-789')); // false

^ 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]

说明：

var valid = /^(\D*\d){10}/.test(str);

console.log(/^(\D*\d){10}/.test('123-456-7890 ext 41')); // true
console.log(/^(\D*\d){10}/.test('123-456-789')); // false

^ 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]

一个数字后跟任意数量的非数字，十次

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一个数字后跟任意数量的非数字，十次。

我讨厌正则表达式。尽管我已经使用它们多少年了，但它的工作原理并不是100%显而易见。我补充了一些解释。我讨厌正则表达式。尽管我已经用了多少年，谁也不知道它是如何工作的，但现在还不是100%清楚。我补充了一些解释。