js supports verification of mobile phone numbers starting with 158 and 159_form effects

Added verification for mobile phone numbers starting with 158 and 159.

Copy code The code is as follows:

//Remove the leading and trailing spaces of the string
String. prototype.Trim = function() {
var m = this.match(/^s*(S (s S )*)s*$/);
return (m == null) ? "" : m[1];
}
//Verify legal mobile phone number
String.prototype.isMobile = function() {
return (/^(?:13d|15[89])-? d{5}(d{3}|*{3})$/.test(this.Trim()));
}

should instance:

<title> Example: Verify mobile phone number </title> <meta http-equiv="content-type" content="text/html; charset=gb2312"> <form name="form1" method="post" action="" onsubmit="return chkForm(this);"> <input type="text" name="tel" value="15812345678" size="30"> <input type="submit" value=""> </form>