在JS中使用正则表达式更正电话号码格式

Question

I have users entering the numbers as

01122449000

• 501122449000
• 5 011 223 39000 01122449000
• 501 12244 90 00

The correct format is +5< last 11 digits >

I have tried with

"+5" + tel.match(/\d+/g)[0]

Butists giving incorrect results

Answer 1

You could try stripping whitespace then retaining just the first digit and final 11 digits:

 var phone = "5 011 223 39000 01122449000"; var output = phone.replace(/\\s+/g, "").replace(/^(\\d)\\d*(\\d{11})$/, "+$1$2"); console.log(phone + "\\n" + output); if (/^\\+5\\d{11}$/.test(output)) { console.log("valid phone number"); } else { console.log("invalid phone number"); }

Answer 2

function getFormattedPhone(a) {
    if (a) return (a = a.match(/\d+/g)) ? "'+2" + a.join("").substr(-11) : ""
};

This worked for me.