Commonly used validation sets for JavaScript forms_javascript skills

JavaScript form verification age
JavaScript form verification age, which determines whether an input amount meets the age, is implemented through regular expressions.
//Check age
function isAge(str){
var mydate=new Date;
var now=mydate.getFullYear();
if (str now-18) {
return false;
return true; email, implemented through regular expressions.
//Check email mailbox
function isEmail(str){
var reg = /^([a-zA-Z0-9_-]) @([a-zA-Z0-9_-]) ((.[a-zA-Z0-9_-]{2,3}){1,2})$/; return reg.test(str); }


JavaScript form verification Chinese capital letters

JavaScript form verification Chinese capital letters, determine whether an input is Chinese or capital English letters, implemented through regular expressions.

//Check whether it is a valid real name, which can only contain Chinese or uppercase English letters
function isValidTrueName(strName){ var str = Trim(strName); //Determine whether it is All English uppercase or all Chinese, can contain spaces var reg = /^[A-Z u4E00-u9FA5] $/;
if(reg.test(str)){
return false;
}
return true;
}
JavaScript form verification is Chinese
JavaScript form verification is Chinese, to determine whether an input is Chinese, implemented through regular expressions.

//Check if it is Chinese
function isChn(str){
var reg = /^[u4E00-u9FA5] $/;
if(!reg.test(str)) {
return false;
return true; Phone number, implemented through regular expressions.
//Check phone number
function isTel(str){
var reg=/^([0-9]|[-]) $/g;
if(str.length
18){
return false;
}
else{
return reg.exec(str); } }