我做了一個鏈接到外部Js文件的HTML代碼,但它的JS代碼不驗證表單字段。任何人都可以發現問題。我試圖盡我所能讓JS來驗證表單,但它不會工作。下面是JS代碼:外部Js文件不驗證我的HTML表單
<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>
訪問檢查員。嗨,請在提出另一個問題之前參考此處。 https://stackoverflow.com/help/how-to-ask 請包括你試過的,而不是說你已經「嘗試了所有的東西」,這也有助於你的表單HTML。 您是否觸發提交功能?你有一個驗證表單的按鈕嗎? –