我做了一个链接到外部Js文件的HTML代码,但它的JS代码不验证表单字段。任何人都可以发现问题。我试图尽我所能让JS来验证表单,但它不会工作。下面是JS代码:外部Js文件不验证我的HTML表单
<script>
function validateMyForm() {
var fname = document["myform"]["firstname"].value;
var lname = document["myform"]["lastname"].value;
var email = document["myform"]["email"].value;
var atpos = email.indexOf("@");
var dotpos = email.lastIndexOf(".");
var pass = document["myform"]["password"].value;
var passlen = pass.length;
var confpass = document["myform"]["ConfirmPassword"].value;
if (fname == null || fname == "") {
alert("Please enter your First Name!");
return false;
} else if (lname == null || lname == "") {
alert("Please enter a your Last Name!");
return false;
} else if (email == null || email == "") {
alert("Please enter an email!");
return false;
} else if (atpos < 1 || dotpos < atpos + 2 || dotpos + 2 >= email.length) {
alert("Please enter a valid email address!");
return false;
} else if (pass == null || pass == "") {
alert("Please enter a Password!");
return false;
} else if (passlen < 4 || passlen > 15) {
alert("Password needs to be to have a length of 4-15 characters");
return false;
} else if (pass != confpass) {
alert("Passwords do not match!");
return false;
}
}
</script>
访问检查员。嗨,请在提出另一个问题之前参考此处。 https://stackoverflow.com/help/how-to-ask 请包括你试过的,而不是说你已经“尝试了所有的东西”,这也有助于你的表单HTML。 您是否触发提交功能?你有一个验证表单的按钮吗? –