


jQuery realizes the automatic settlement effect of the shopping cart form_jquery
The example in this article describes the automatic settlement effect of jQuery on the shopping cart form. Share it with everyone for your reference. The details are as follows:
Here jQuery implements automatic settlement of the shopping cart form. As long as the user inputs the quantity of the purchased goods, the total amount of the goods and the shipping amount can be calculated in a timely manner, similar to Taobao's shopping cart settlement function. The calculation process is timely, using jquery The function of Ajax calculation without refreshing the web page has been implemented. Those who build shopping websites may use this example.
The screenshot of the running effect is as follows:
The specific code is as follows:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>jQuery购物车表单自动结算</title> <style> *{margin:0;padding:0;} body{font:12px "Lucida Grande", Helvetica, Sans-Serif;padding:50px;} table{border-collapse:collapse;} #order-table{width:100%;} #order-table td{padding:5px;} #order-table th{padding:5px;background:black;color:white;text-align:left;} #order-table td.row-total{text-align:right;} #order-table td input{width:75px;text-align:center;} #order-table tr.even td{background:#eee;} #order-table td .total-box,.total-box{border:3px solid green;width:70px;padding:3px;margin:5px 0 5px 0;text-align:center;font-size:14px;} #shipping-subtotal{margin:0;} #shipping-table{width:350px;float:right;} #shipping-table td{padding:5px;} #shipping-table th{padding:5px;background:black;color:white;text-align:left;} #shipping-table td input{width:69px;text-align:center;} #order-total{font-weight:bold;font-size:21px;width:110px;} </style> <script type="text/javascript" src="jquery-1.6.2.min.js"></script> <script type="text/javascript"> function IsNumeric(sText) { var ValidChars = "0123456789."; var IsNumber=true; var Char; for (i = 0; i < sText.length && IsNumber == true; i++) { Char = sText.charAt(i); if (ValidChars.indexOf(Char) == -1) { IsNumber = false; } } return IsNumber; }; function calcProdSubTotal() { var prodSubTotal = 0; $(".row-total-input").each(function(){ var valString = $(this).val() || 0; prodSubTotal += parseInt(valString); }); $("#product-subtotal").val(prodSubTotal); }; function calcTotalPallets() { var totalPallets = 0; $(".num-pallets-input").each(function() { var thisValue = $(this).val(); if ( (IsNumeric(thisValue)) && (thisValue != '') ) { totalPallets += parseInt(thisValue); }; }); $("#total-pallets-input").val(totalPallets); }; function calcShippingTotal() { var totalPallets = $("#total-pallets-input").val() || 0; var shippingRate = $("#shipping-rate").text() || 0; var shippingTotal = totalPallets * shippingRate; $("#shipping-subtotal").val(shippingTotal); }; function calcOrderTotal() { var orderTotal = 0; var productSubtotal = $("#product-subtotal").val() || 0; var shippingSubtotal = $("#shipping-subtotal").val() || 0; var orderTotal = parseInt(productSubtotal) + parseInt(shippingSubtotal); var orderTotalNice = "$" + orderTotal; $("#order-total").val(orderTotalNice); }; $(function(){ $('.num-pallets-input').blur(function(){ var $this = $(this); var numPallets = $this.val(); var multiplier = $this .parent().parent() .find("td.price-per-pallet span") .text(); if ( (IsNumeric(numPallets)) && (numPallets != '') ) { var rowTotal = numPallets * multiplier; $this .css("background-color", "white") .parent().parent() .find("td.row-total input") .val(rowTotal); } else { $this.css("background-color", "#ffdcdc"); }; calcProdSubTotal(); calcTotalPallets(); calcShippingTotal(); calcOrderTotal(); }); }); </script> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /></head> <body> <h1 id="jQuery购物车自动计算表单金额">jQuery购物车自动计算表单金额</h1> <table id="order-table"> <tr> <th>商品名称</th> <th>数量</th> <th>X</th> <th>单价</th> <th>=</th> <th style="text-align: right;">总计</th> </tr> <tr class="odd"> <td class="product-title">裤子</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="turface-pro-league-num-pallets" ></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>340</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="turface-pro-league-row-total" disabled="disabled"></input> </td> </tr> <tr class="even"> <td class="product-title">袜子</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="turface-pro-league-red-num-pallets"></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>455</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="turface-pro-league-red-row-total" disabled="disabled"></input> </td> </tr> <tr class="odd"> <td class="product-title">婴儿用品</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="turface-quick-dry-num-pallets" ></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>300</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="turface-quick-dry-row-total" disabled="disabled"></input> </td> </tr> <tr class="even"> <td class="product-title">电脑用品</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="turface-mound-clay-red-num-pallets"></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>410</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="turface-mound-clay-red-row-total" disabled="disabled"></input> </td> </tr> <tr class="odd"> <td class="product-title">汽车装饰用品</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="diamond-pro-red-num-pallets" ></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>365</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="diamond-pro-red-row-total" disabled="disabled"></input> </td> </tr> <tr class="even"> <td class="product-title">家居装饰用品</em></td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="diamond-pro-drying-agent-num-pallets"></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>340</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="diamond-pro-drying-agent-row-total" disabled="disabled"></input> </td> </tr> <tr class="odd"> <td class="product-title">生活用品</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="diamond-pro-professional-num-pallets" ></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>375</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="diamond-pro-professional-row-total" disabled="disabled"></input> </td> </tr> <tr class="even"> <td class="product-title">建材用品</td> <td class="num-pallets"> <input type="text" class="num-pallets-input" id="diamond-pro-top-dressing-num-pallets"></input> </td> <td class="times">X</td> <td class="price-per-pallet">$<span>340</span></td> <td class="equals">=</td> <td class="row-total"> <input type="text" class="row-total-input" id="diamond-pro-top-dressing-row-total" disabled="disabled"></input> </td> </tr> <tr> <td colspan="6" style="text-align: right;">产品小计: <input type="text" class="total-box" id="product-subtotal" disabled="disabled"></input> </td> </tr> </table> <table id="shipping-table"> <tr> <th>总数量.</th> <th>X</th> <th>运费</th> <th>=</th> <th style="text-align: right;">总运费</th> </tr> <tr> <td id="total-pallets"> <input id="total-pallets-input" type="text" disabled="disabled"></input> </td> <td>X</td> <td id="shipping-rate">10.00</td> <td>=</td> <td style="text-align: right;"> <input type="text" class="total-box" id="shipping-subtotal" disabled="disabled"></input> </td> </tr> </table> <div class="clear"></div> <div style="text-align:right;"> <span>订单总额: </span> <input type="text" class="total-box" id="order-total" disabled="disabled"></input> <br /><br /> <input type="submit" value="提交结账" class="submit" /> </div> </body> </html>
I hope this article will be helpful to everyone’s jquery programming design.

The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.

The shift from C/C to JavaScript requires adapting to dynamic typing, garbage collection and asynchronous programming. 1) C/C is a statically typed language that requires manual memory management, while JavaScript is dynamically typed and garbage collection is automatically processed. 2) C/C needs to be compiled into machine code, while JavaScript is an interpreted language. 3) JavaScript introduces concepts such as closures, prototype chains and Promise, which enhances flexibility and asynchronous programming capabilities.

Different JavaScript engines have different effects when parsing and executing JavaScript code, because the implementation principles and optimization strategies of each engine differ. 1. Lexical analysis: convert source code into lexical unit. 2. Grammar analysis: Generate an abstract syntax tree. 3. Optimization and compilation: Generate machine code through the JIT compiler. 4. Execute: Run the machine code. V8 engine optimizes through instant compilation and hidden class, SpiderMonkey uses a type inference system, resulting in different performance performance on the same code.

JavaScript's applications in the real world include server-side programming, mobile application development and Internet of Things control: 1. Server-side programming is realized through Node.js, suitable for high concurrent request processing. 2. Mobile application development is carried out through ReactNative and supports cross-platform deployment. 3. Used for IoT device control through Johnny-Five library, suitable for hardware interaction.

I built a functional multi-tenant SaaS application (an EdTech app) with your everyday tech tool and you can do the same. First, what’s a multi-tenant SaaS application? Multi-tenant SaaS applications let you serve multiple customers from a sing


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.