Question

我需要创建一个正则表达式函数，该函数将根据特定条件验证电话号码字段，并显示三种情况中的每一种情况的警报。

实际上我有3个正则表达式函数，我希望将它们组合在一起。

/^3\d{9}$/; //If it starts with 3 and has another 9 numbers it's a cellphone

/^0\d{7,10}$/; //If it starts with 0 and has another 7-10 numbers it's a landline

/^(?:00|\+)/; //If it starts with 00 or a + sign, it's an international number

我想要实现的是，有一个javascript函数，它将结合这三个正则表达式函数并显示某个消息，以防数字无效。

因此，例如，如果数字以3开头但在3之后的数字少于或多于9，可能是错误的手机号码，所以我想警告用户。固定电话也是如此。对于国际号码，我只想让他们知道它可能是一个国际号码，因为它以双00或+号开头。

我的问题是我不知道如何将这三个正则表达式值组合在一起，这将允许我构建一个简单而干净的JavaScript代码。

Answer 1

尽管我能做到“优雅”......

var input = '00372553253';
var matches = [];

// The following is technically one line!
[
    {regex: /^3\d{9}$/, type: "cellphone"},
    {regex: /^0\d{7,10}$/, type: "landline"},
    {regex: /^(?:00|\+)/, type: "international"}
].forEach(
    function(element) {
        if (element.regex.test(input))
            matches.push(element.type);
    }
);

alert(matches);

测试用例实际上会匹配两个正则表达式！

Answer 2

我认为这对您有用：/^(?:3\d{9}|0\d{7,10}|(?:00|\+)\d+)$/g

const testPhoneNumber = number => /^(?:3\d{9}|0\d{7,10}|(?:00|\+)\d+)$/.test(number)

const numbers = [123, "+48667065144", 3111222333, "001234567", "00123456879", 6473812354, 3475456389, 7483925821]

for (const number of numbers) {
  console.log(`${number} is ${testPhoneNumber(number) ? "valid": "not valid"} phone number`)
}

Answer 3

match(/(^3\d{9}$)|(^0\d{7,10}$)|(^(?:00|\+))/)

这将捕获数组中的匹配数据（大小为4）。

位置0：匹配的数据

位置1：第一个正则表达式的匹配数据

...

Answer 4

＆＃13;

function check(number) {
	//var number = '3123456789';
	//var number = '01234567';
	//var number = '001';

	var regexList = [
		'^3\\d{9}$', //If it starts with 3 and has another 9 numbers it's a cellphone
		'^0\\d{7,10}$', //If it starts with 0 and has another 7-10 numbers it's a landline
		'^[0]{2}|[\+]' //If it starts with 00 or a + sign, it's an international number
	];

	for (var r in regexList)
		if (number.match(new RegExp(regexList[r])))
			break;
		else
			r = null;
			
	switch (r) {
		case "0":
			alert('If it starts with 3 and has another 9 numbers it\'s a cellphone');
			break;
		case "1":
			alert('If it starts with 0 and has another 7-10 numbers it\'s a landline');
			break;
		case "2":
			alert('If it starts with 00 or a + sign, it\'s an international number');
			break;
		default:
			alert('Invalid number');
	}
}

＆＃13;

<input type="text" id="numberToCheck" />
<input type="button" onclick="check(document.getElementById('numberToCheck').value)" />

＆＃13;

电话号码正则表达式 - 合并三个条件

4 个答案: