Two examples of JS judgment and verification of MAC address_javascript skills

var temp = /[A -Fa-f0-9]{2}:[A-Fa-f0-9]{2}:[A-Fa-f0-9]{2}:[A-Fa-f0-9]{2}: [A-Fa-f0-9]{2}:[A-Fa-f0-9]{2}/;
if (!temp.test(document.mac.value))
{
Return false;
}

function macFormCheck(mac)
{
var macs = new Array();
macs = mac.split(":");


if(macs.length != 6){
alert("The entered mac address format is incorrect, please enter it in the form of xx:xx:xx:xx:xx:xx (xx is a hexadecimal number)! ");// Yiwang online tutorial http://yige.org/js/
return false;
}


for (var s=0; s<6; s ) {
var temp = parseInt(macs[s],16);

if(isNaN(temp))
{
alert("The entered mac address format is incorrect, please Enter in the form of xx:xx:xx:xx:xx:xx (xx is a hexadecimal number)!");
return false;
}


if(temp < 0 | );
return false;
}
}


return true;
}