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February 28, 2021 16:16
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my own regexp to check phone number
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function telephoneCheck(str) { | |
const regexp = /^(1\s*\(\d{3}\)|1\s\d{3}|\(\d{3}\)|\d{3})(\s|-)*\d{3}(\s|-)*\d{4}$/ | |
return regexp.test(str) | |
} | |
const arr = [ | |
"1 555)555-5555", // should return false. | |
"2 (757) 622-7382", // should return false. | |
"0 (757) 622-7382", // should return false. | |
"-1 (757) 622-7382", // should return false | |
"2 757 622-7382", // should return false. | |
"10 (757) 622-7382", // should return false. | |
"27576227382", // should return false. | |
"2(757)6227382", // should return false. | |
"2(757)622-7382", // should return false. | |
"555)-555-5555", // should return false. | |
"(555-555-5555", // should return false. | |
'555-555-5555', // should return true. | |
'(555)555-5555', // should return true. | |
'(555) 555-5555', // should return true. | |
'555 555 5555', // should return true. | |
'5555555555', // should return true. | |
'1 555 555 5555' // should return true. | |
] | |
for (let num of arr) { | |
console.log(telephoneCheck(num), num); | |
} |
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