The JavaScript form validates the phone number with a regular expression
- 2020-03-30 02:23:31
- 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.length<7 || str.length>18){
return false;
}
else{
return reg.exec(str);
}