JavaScript implements a form to validate phone Numbers with regular expressions

  • 2020-03-30 02:19:08
  • OfStack

The JavaScript form validates a phone number to determine whether an input quantity is a phone number, using regular expressions.
 
//Check the phone number
function isTel(str){ 
var reg=/^([0-9]|[-])+$/g ; 
if(str.length18){ 
return false; 
} 
else{ 
return reg.exec(str); 
} 
} 

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