电话号码正则表达式-合并三个条件

Question

I need to create a regex function which will validate a phone number field based on certain conditions and show alerts for each of the three cases.

Practically I have this 3 regex functions which I want to combine in a single one.

/^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

What I am trying to achieve, is to have a javascript function which will combine this three regex functions and show a certain message in case the number is not valid.

So for example if the number starts with 3 but it has less or more than 9 numbers after the 3, probably it's a wrong cellphone number so I want to warn the user about that. Same thing for the Landline. For the international numbers I simply want to make them aware that it might be an international number because it starts with double 00 or + sign.

My problem is that I don't know how to combine this three regex values in a single one, which will allow me to build a simple and clean javascript code.

Answer 1

I think this will work for you: /^(?: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 2

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

this will capture the matched data in an array (size 4).

position 0 : the matched data

position 1 : matched data of the 1st regexp

....

Answer 3

 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\\'sa cellphone'); break; case "1": alert('If it starts with 0 and has another 7-10 numbers it\\'sa landline'); break; case "2": alert('If it starts with 00 or a + sign, it\\'s an international number'); break; default: alert('Invalid number'); } } 

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

Answer 4

As "elegant" as I can make it...

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);

The test case will actually match two regexes!