[英]Java Script Functions Don't work and How do i add my javascript file to html and get it to work
我有我的 javascript 文件和代碼,稱為 script.js,我已將其添加到我的 HTML 文件中。 我對此很陌生,我不確定我是否做得對。 這些功能似乎也不起作用。 我很迷茫,只是想讓你弄清楚。 謝謝你。
這是我的 javascript 文件,名為 (script.js)
$(document).ready(function () {
//When add database, will pull total from database
var total = 30;
var totalTax = total * 0.8;
var totalShip = total * 0.3;
var totalAll = total + totalTax + totalShip;
document.getElementById("totalShop").innerHTML = total;
document.getElementById("totalTax").innerHTML = totalTax;
document.getElementById("shipping").innerHTML = totalShip;
document.getElementById("totalDue").innerHTML = totalAll;
});
function applyActiveCss(id) {
for (var i = 0; i < document.links.length; i++) {
if (document.links[i].id == id) {
document.links[i].className = 'active';
}
else {
document.links[i].className = 'links';
}
}
}
function validateCheckout() {
if (document.checkoutForm.cardNumber.value == "") {
alert("Please provide card number");
document.checkoutForm.cardNumber.focus();
return false;
}
if (document.checkoutForm.month.value == "" || isNaN(document.checkoutForm.month.value) ||
document.checkoutForm.month.value.length != 2) {
alert("Please provide your month");
document.checkoutForm.month.focus();
return false;
}
if (document.checkoutForm.year.value == "" || isNaN(document.checkoutForm.year.value) ||
document.checkoutForm.year.value.length != 4) {
alert("Please provide your month");
document.checkoutForm.year.focus();
return false;
}
return (true);
}
function validateUserInfo() {
if (document.userInfo.fullname.value == "") {
alert("Please provide full name");
document.checkoutForm.cardNumber.focus();
return false;
}
if (document.userInfo.email.value == "") {
alert("Please provide your Email!");
document.userInfo.email.focus();
return false;
}
var emailID = document.userInfo.email.value;
var atpos = emailID.indexOf("@");
var dotpos = emailID.lastIndexOf(".");
if (atpos < 1 || (dotpos - atpos < 2)) {
alert("Please enter correct email ID")
document.userInfo.email.focus();
return false;
}
if (document.userInfo.zipcode.value == "" ||
isNaN(document.userInfo.zipcode.value) ||
document.userInfo.zipcode.value.length != 5) {
alert("Please provide a zip in the format 12345");
document.userInfo.zipcode.focus();
return false;
}
var phoneID = document.userInfo.phone.value;
var dashpos1 = phoneID.indexOf("-");
var dashpos2 = phoneID.lastIndexOf("-");
for (var i = 3; i < 7; i++) {
phoneID[i] = phoneID[i + 1];
}
for (var j = 6; j < 8; j++) {
phoneID[j] = phoneID[j + 2];
}
if (document.userInfo.phone.value == "" ||
document.userInfo.phone.value.length != 12
|| dashpos1 != 3 || dashpos2 != 7 || isNaN(phoneID)) {
alert("Please provide a phone number in the format 123-456-7890");
document.userInfo.phone.focus();
return false;
}
return (true);
}
這是我的 HTML 文件的一部分,名為 (userinfo.html)
¿<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>Personal Information</title>
<link rel="stylesheet" type="text/css" href="StyleSheet1.css">
</head>
<body>
<script src="script.js"> </script>
<h1>User Information</h1>
<p>Please fill out the following information.</p>
<!--<form class="" action="submit.php" method="post">-->
<form action=".shipinfo.html" name="userInfo" onsubmit="return (validateUserInfo());">
<table>
<tbody>
<tr>
<td>
Full Name: <br>
<input type="text" maxlength="100" name="fullname" required>
</td>
<td>
Phone Number: <br>
<input type="number" minlength = "12" maxlength="12" name="phone"
placeholder="123-456-7890">
</td>
</tr>
<tr>
<td>
Address Line 1: <br>
<input type="text" maxlength="100" name="add1" required>
</td>
<td>
Address Line 2: <br>
<input type="text" maxlength="100" name="add2">
</td>
</tr>
<tr>
<td>
City: <br>
<input type="text" maxlength="100" name="city" required>
</td>
當您使用$
document ready
時,您應該在script.js
之前包含Jquery
文件。
<html>
<head>
<script src="jquery.js">
<script src="script.js">
</head>
<body>
// your html code.
</body>
</html>
查看您的console
是否有錯誤。
我在您的文件中看不到以下 jquery 腳本(因此它不會讀取文檔就緒部分,並且您在控制台中看不到“已加載文檔”。
<script src="https://code.jquery.com/jquery-1.9.1.min.js"></script>
您在控制台中遇到的另一個錯誤是 'Cannot read property 'innerHTML' of null' 為此:
document.getElementById("totalShip").innerHTML = total;
當元素(在本例中為“totalship”)在您的網頁中不可訪問或不可用並且因此無法讀取其屬性時,就會發生這種情況。 由於您正在訪問一個 id,您可以在此處提供您的 css 文件嗎? 此外,目前無法通過您的文件訪問通過這些文件(.userInfo、.checkoutForm 等)訪問您的數據庫的位置。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.