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How to Use jQuery to calculate the price of a shopping cart

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Author: User
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How to Use jQuery to calculate the price of a shopping cart

This article mainly introduces jQuery's method of implementing the shopping cart price calculation function. The example analyzes jQuery's operation skills for html elements, which is very useful. For more information, see

 

 

This document describes how to use jQuery to calculate the price of a shopping cart. Share it with you for your reference. The details are as follows:

Purpose

You can modify the number of items in the shopping cart on the html interface, and change the subtotal and total prices of the items in the shopping cart.

Implementation

1. When you click to enter the interface, the onload = "" method in the body is triggered during refresh to jump to the JS Code. The reason for this is that in the database, we only store the number of items that a customer is going to buy, rather than the subtotal of each type of product price and the total price of all items in the shopping cart, the purpose of initialization is to calculate the numbers and display them on the front-end interface.

2. When you change the quantity of each item in the quantity input box, the price and total number of items in the entire shopping table will change according to the quantity.

Finished sample image display

All code (Firefox)

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<! Doctype html>

<Html>

<Head>

<Title> cart </title>

<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>

<! -- To import the jquery-1.9.1.min.js, do not export the terminal -->

<Script type = "text/javascript" src = "jquery-1.9.1.min.js"> </script>

<Script language = "javascript">

$ (Function (){

Var size = 3.0 * $ ('# image1'). width ();

$ ("# Image1"). mouseover (function (event ){

Var implements targetmediaworkflow (event.tar get );

If ($ target. is ('img '))

{

$ ("

"Height": size,

"Width": size,

}). AppendTo ($ ("# imgtest");/* append all matching elements to the end of the specified element. */

}

}). Mouseout (function (){

$ ("# Tip"). remove ();/* remove element */

})

 

})

</Script>

<Script type = "text/javascript">

Function total (id)

{

/* Calculate a single price */

Var quantity = document. getElementById ("quantity" + id). value;

Var price = document. getElementById ("price" + id). value;

Var smallTotal = quantity * price;

Var smallT = document. getElementById ("smallTotal" + id );

SmallT. innerHTML = smallTotal;

 

/* Calculate the total price */

Var totalPrice = 0;

For (var a = 1; a <3; a ++ ){

Var quantity = document. getElementById ("quantity" + a). value;

Var price = document. getElementById ("price" + a). value;

Var smallTotal = quantity * price;

TotalPrice = totalPrice + smallTotal;

}

Var total = document. getElementById ("total ");

Total. innerHTML = totalPrice;

}

</Script>

<Script type = "text/javascript">

Function initialize ()

{

Var totalPrice = 0;

For (var a = 1; a <3; a ++ ){

Var quantity = document. getElementById ("quantity" + a). value;

Var price = document. getElementById ("price" + a). value;

Var smallTotal = quantity * price;

TotalPrice = totalPrice + smallTotal;

/* Alert (smallTotal );*/

Var smallT = document. getElementById ("smallTotal" + );

SmallT. innerHTML = smallTotal;

}

/* Retrieve the total prices of all items in the shopping cart */

Var total = document. getElementById ("total ");

Total. innerHTML = totalPrice;

}

</Script>

<Style type = "text/css">

# Imgtest {

Position: absolute;

Top: 100px;

Left: 400px;

Z-index: 1;

}

Table {

Left: 100px;

Font-size: 20px;

}

</Style>

</Head>

<Body onload = "initialize ()">

<Div id = "imgtest"> </div>

<Br/>

<Br/>

<Table border = "1" style = "text-align: center;" align = "center">

<Thead style = "height: 50">

<Td style = "WIDTH: 300px">

Product Name

</Td>

<Td style = "WIDTH: 60px">

Image

</Td>

<Td style = "WIDTH: 170px">

Quantity

</Td>

<Td style = "WIDTH: 170px">

Price

</Td>

<Td style = "WIDTH: 250px">

Subtotal

</Td>

</Thead>

<Tbody>

<Tr>

<Td class = "name"> Item 1 </td>

<Td class = "image">

</Td>

<Td class = "quantity">

<Input id = "quantity1" value = "1" onblur = "total (1);"/>

</Td>

<Td class = "price">

<Input type = "hidden" id = "price1" value = "20"/>

20

</Td>

<Td class = "total">

<Span id = "smallTotal1"> </span> Meta

</Td>

</Tr>

<Tr>

<Td class = "name"> Item 2 </td>

<Td class = "image">

</Td>

<Td class = "quantity">

<Input id = "quantity2" value = "2" onblur = "total (2);"/>

</Td>

<Td class = "price">

<Input type = "hidden" id = "price2" value = "30"/>

30

</Td>

<Td class = "total">

<Span id = "smallTotal2"> </span> Meta

</Td>

</Tr>

<Tr>

<Td colspan = "4" class = "cart_total">

<Br>

</Td>

<Td>

<Span class = "red"> total: </span> <span id = "total"> </span> RMB

</Td>

</Tr>

</Tbody>

</Table>

</Body>

</Html>

I hope this article will help you with jQuery programming.

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