基于HTML / JavaScript中的单选按钮选择更改图像
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了基于HTML / JavaScript中的单选按钮选择更改图像，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含13440字，纯文字阅读大概需要20分钟。
内容图文
我有一个项目,我将为三个不同的单选按钮组显示一个图像.如果选择了单选按钮,则图像需要更改为不同的图片.我有其余的代码做我需要它,除了这部分.从技术上讲,我也想改变单选按钮的字体颜色,并在选择它时加粗.我甚至没有尝试过,因为我不能让图像切换工作.这是我的代码.任何输入都会有所帮助.代码以一个函数开始,根据单选按钮选择进行一些计算.然后进入一些验证部分,提交和清除.我所做的图像材料在HTML正文之前更接近底部.就像我说的,任何输入都将非常感激.
<html>
<head>
<title> Final Project Order Form </title>
<script type="text/javascript">
var prices = new Object();
function updateTotal () {
var total = 0.00;
for (var price in prices) {
total += parseInt(prices[price]);
}
document.getElementById("total").value = total; // Add the id "total" to the input field
}
function doClear()
{
document.AddressForm.customer.value = "";
document.AddressForm.address.value = "";
document.AddressForm.city.value= "";
document.AddressForm.state.options[0].selected = "true";
document.AddressForm.zip.value = "";
document.AddressForm.phone.value= "";
document.AddressForm.email.value= "";
document.AddressForm.total.value= "";
document.OrderForm.cases[0].checked = false;
document.OrderForm.cases[1].checked = false;
document.OrderForm.cases[2].checked = false;
document.OrderForm.monitors[0].checked = false;
document.OrderForm.monitors[1].checked = false;
document.OrderForm.monitors[2].checked = false;
document.OrderForm.printers[0].checked = false;
document.OrderForm.printers[1].checked = false;
document.OrderForm.printers[2].checked = false;
return;
}
function validateText()
{
var transcribed = true;
var notification = "";
var customer = document.AddressForm.customer.value;
var address = document.AddressForm.address.value;
var city = document.AddressForm.city.value;
var state = document.AddressForm.state.value;
var zip = document.AddressForm.zip.value;
var phone = document.AddressForm.phone.value;
var email = document.AddressForm.email.value;
if (customer.length == 0)
{
transcribed = false;
alert("Please enter your name.");
return;
}
if (address.length == 0)
{
transcribed = false;
alert("Please enter your address.");
return;
}
if (city.length == 0)
{
transcribed = false;
alert("Please enter your city.");
return;
}
if (zip.length == 0)
{
transcribed = false;
alert("Please enter your five digit zip.");
return;
}
if (phone.length == 0)
{
transcribed = false;
alert("Please enter your phone.");
return;
}
if (email.length == 0)
{
transcribed = false;
alert("Please enter your email.");
return;
}
if (!transcribed)
{
alert(notification);
}
return transcribed;
}
function validateEmail()
{
var email = document.AddressForm.email.value;
var pass = true;
if (email.indexOf('@') == -1)
{
pass = false;
}
else if (email.indexOf('@') == 0)
{
pass = false;
}
else if (email.indexOf('@') == email.length - 1)
{
pass = false;
}
return pass;
}
/*
Checking all the format functions
*/
function validatePhone()
{
var phone = document.AddressForm.phone.value;
if(isTenDigits(phone) || isTwelveAndBrackets(phone) || isTwelveAndDashes(phone) || isBracketsAndDash(phone))
return true;
return false;
}
/*
Checking all the Zip is correct
*/
function validateZip()
{
var zip = document.AddressForm.zip.value;
if(isfiveDigits(zip))
return true;
return false;
}
/*
Checking the 10-digit format
*/
function isTenDigits(phone)
{
if(phone.length != 10)
return false;
var pass = true;
for (var i = 0;i < phone.length; i++)
{
var c = phone.charAt(i);
if (!isDigit(c))
{
pass = false;
}
}
return pass;
}
/*
Checking the (xxx)xxxxxxx format
*/
function isTwelveAndBrackets(phone)
{
if(phone.length != 12)
return false;
var pass = true;
for (var i = 0;i < phone.length; i++)
{
var c = phone.charAt(i);
var pos = i + 1;
if(i == 0)
{
if(c != '(')
{
pass = false;
}
}
else if(i == 4)
{
if(c != ')')
{
pass = false;
}
}
else
{
if (!isDigit(c))
{
pass = false;
}
}
}
return pass;
}
/*
Checking the xxx-xxx-xxxx format
*/
function isTwelveAndDashes(phone)
{
if(phone.length != 12)
return false;
var pass = true;
for (var i = 0;i < phone.length; i++)
{
var c = phone.charAt(i);
var pos = i + 1;
if(i == 3)
{
if(c != '-')
{
pass = false;
}
}
else if(i == 7)
{
if(c != '-')
{
pass = false;
}
}
else
{
if (!isDigit(c))
{
pass = false;
}
}
}
return pass;
}
/*
Checking the (xxx)-xxx-xxxx format
*/
function isBracketsAndDash(phone)
{
if (phone.length != 13)
return false;
var pass = true;
for (var i = 0;i < phone.length; i++)
{
var c = phone.charAt(i);
var pos = i + 1;
if(i == 0)
{
if(c != '(')
{
pass = false;
}
}
else if(i == 4)
{
if(c != ')')
{
pass = false;
}
}
else if(i == 8)
{
if(c != '-')
{
pass = false;
}
}
else
{
if (!isDigit(c))
{
pass = false;
}
}
}
return pass;
}
/*
Validate Zip is 5 digits and numerical
*/
function isfiveDigits(zip)
{
if(zip.length != 5)
return false;
var pass = true;
for (var i = 0;i < zip.length; i++)
{
var c = zip.charAt(i);
if (!isDigit(c))
{
pass = false;
}
}
return pass;
}
function isDigit(num)
{
if (num.length>1)
{
return false;
}
var string="1234567890";
if (string.indexOf(num)!=-1)
{
return true;
}
return false;
}
function printCaseRadio()
{
var tower;
if (document.OrderForm.cases[0].checked)
{
tower = "Desktop Case ($500) <br />";
}
else if (document.OrderForm.cases[1].checked)
{
tower = "Mini-Tower Case ($600) <br />";
}
else if (document.OrderForm.cases[2].checked)
{
tower = "Full Tower Case ($700) <br />";
}
else
{
tower = "No Case Selected <br/>"
}
return tower;
}
function printMonitorRadio()
{
var monitors;
if (document.OrderForm.monitors[0].checked)
{
monitors = "17inch LCD Flat Screen (250.00) <br />";
}
else if (document.OrderForm.monitors[1].checked)
{
monitors = "19inch LCD Flat Screen (300.00) <br />";
}
else if (document.OrderForm.monitors[2].checked)
{
monitors = "21inch LCD Flat Screen (350.00) <br />";
}
else
{
monitors = "No Monitor Selected <br/>"
}
return monitors;
}
function printPrinterRadio()
{
var printers;
if (document.OrderForm.printers[0].checked)
{
printers = "Inkjet Printer (100.00) <br />";
}
else if (document.OrderForm.printers[1].checked)
{
printers = "Laser Printer (250.00) <br />";
}
else if (document.OrderForm.printers[2].checked)
{
printers = "Laser Printer (250.00) <br />";
}
else
{
printers = "No Printer Selected <br/>"
}
return printers;
}
function doSubmit()
{
/*
Submitting Dropdown selection
*/
var ind = document.AddressForm.state.options.selectedIndex;
var value = document.AddressForm.state.options[ind].value;
/*
Checking the phone number is correct
*/
if(validatePhone() == false)
{
var message = "Phone number must be in one of the following formats:\n";
message += "ddd-ddd-dddd\n";
message += "dddddddddd\n";
message += "(ddd)ddddddd\n";
message += "(ddd)ddd-dddd";
alert(message);
}
/*
Checking the zip is correct
*/
if(validateZip() == false)
{
var message = "Zip must be five digits and can only contain numbers";
alert(message);
}
/*
Checking the email is correct
*/
if(validateEmail() == false)
{
var message = "Email must contain @ except in the first and last position.";
alert(message);
}
/*
Checking that all validation steps work, prior to printing out detail
*/
if (validateText() && validateEmail()&&validatePhone()&& validateZip())
{
var confirmation = "";
var Namestring = document.AddressForm.customer.value.charAt(0).toUpperCase()+document.AddressForm.customer.value.substring(1).toLowerCase();
var Citystring = document.AddressForm.city.value.charAt(0).toUpperCase()+document.AddressForm.city.value.substring(1).toLowerCase();
confirmation += "Your order has been submitted.<br /><br />";
confirmation += "Name: " + Namestring + "<br />";
confirmation += "Address: " + document.AddressForm.address.value + "<br />";
confirmation += "City: " + Citystring + "<br />";
confirmation += "State: " + value + "<br />";
confirmation += "Zip: " + document.AddressForm.zip.value + "<br />";
confirmation += "Phone: " + document.AddressForm.phone.value + "<br />";
confirmation += "Email: " + document.AddressForm.email.value + "<br />";
var casepick = printCaseRadio();
confirmation += casepick;
var monitorpick = printMonitorRadio();
confirmation += monitorpick;
var printerpick = printPrinterRadio();
confirmation += printerpick;
confirmation += "Total: " + document.AddressForm.total.value + "<br />";
document.write(confirmation);
}
return;
}
function getRadioValue(radioName)
{
for (var i = 0; i < radioName.length; i++)
{
if (radioName[i].checked == true)
{
return radioName[i].value;
}
}
}
var caseIndex=0;
function displayCase()
{
if (document.OrderForm.cases[0].checked = true)
{
caseIndex=0;
}
else if (document.OrderForm.cases[0].checked = true)
{
caseIndex=1;
}
else if (document.OrderForm.cases[0].checked = true)
{
caseIndex=2;
}
document.casepic.src = casePics[caseIndex];
}
var monitorIndex =0;
function displayMonitor()
{
if (document.OrderForm.monitors[0].checked = true)
{
monitorIndex =0;
}
else if (document.OrderForm.monitors[1].checked = true)
{
monitorIndex =1;
}
else if (document.OrderForm.monitors[2].checked = true)
{
monitorIndex =2;
}
document.monitorpic.src = monitorPics[monitorIndex];
}
var printerIndex =0;
function displayPrinter()
{
if (document.OrderForm.printers[0].checked = true)
{
printerIndex =0;
}
else if (document.OrderForm.printers[1].checked = true)
{
printerIndex =1;
}
else if (document.OrderForm.printers[2].checked = true)
{
printerIndex =2
}
document.printpic.src = printerPics[printerIndex];
}
function startup()
{
var casePics = new Array(3);
casePics[0]= new Image;
casepics[0].src = "case1.jpg";
casePics[1]= new Image;
casepics[1].src = "case2.jpg";
casePics[2]= new Image;
casepics[2].src = "case3.jpg";
var monitorPics = new Array(3);
monitorPics[0]= new Image;
monitorpics[0].src = "monitor1.jpg";
monitorPics[1]= new Image;
monitorpics[1].src = "monitor2.jpg";
monitorPics[2]= new Image;
monitorpics[2].src = "monitor3.jpg";
var printerPics = new Array(3);
printerPics[0]= new Image;
printerpics[0].src = "printer1.jpg";
printerPics[1]= new Image;
printerpics[1].src = "printer2.jpg";
printerPics[2]= new Image;
printerpics[2].src = "printer3.jpg";
displayCase();
displayMonitor();
displayPrinter();
}
</script>
<body onl oad = "startup()" >
<h1 align="center">Computer System Order Form</h1>
<table border="black" cellpadding="10px" align="center">
<tr>
<td>
<table cellpadding="10px">
<form name="OrderForm">
<tr>
<td>
Computer Case Style:</br>
<input type="radio" name="cases" value="500.00" onchange="javascript:prices['cases'] = this.value; updateTotal();" /> Desktop Case (500.00) </br>
<input type="radio" name="cases" value="600.00" onchange="javascript:prices['cases'] = this.value; updateTotal();" /> Mini-Tower Case (600.00) </br>
<input type="radio" name="cases" value="700.00" onchange="javascript:prices['cases'] = this.value; updateTotal();" /> Full-Tower Case (700.00) </br>
</td>
<td>
<img name="casepic" src="case1.jpg" width="125" height="125">
</td>
</tr>
<tr>
<td>
Computer Monitor: <br/>
<input type="radio" name="monitors" value="250.00" onchange="javascript:prices['monitors'] = this.value; updateTotal();" /> 17" LCD Flat Screen (250.00) </br>
<input type="radio" name="monitors" value="300.00" onchange="javascript:prices['monitors'] = this.value; updateTotal();" /> 19" LCD Flat Screen (300.00) </br>
<input type="radio" name="monitors" value="350.00" onchange="javascript:prices['monitors'] = this.value; updateTotal();" /> 21" LCD Flat Screen (350.00) </br>
</td>
<td>
<img name="monitorpic" src="monitor1.jpg" width="125" height="125">
</td>
</tr>
<tr>
<td>
Computer Printer:<br/>
<input type="radio" name="printers" value="100.00" onchange="javascript:prices['printers'] = this.value; updateTotal();" /> Inkjet Printer (100.00) </br>
<input type="radio" name="printers" value="250.00" onchange="javascript:prices['printers'] = this.value; updateTotal();" /> Laser Printer (250.00) </br>
<input type="radio" name="printers" value="350.00" onchange="javascript:prices['printers'] = this.value; updateTotal();" /> Color Printer (350.00) </br>
</td>
<td>
<img name="printpic" src="printer1.jpg" width="125" height="125"/>
</td>
</tr>
</form>
</table>
</td>
<td>
<table padding="10px">
<tr>
<form name="AddressForm">
<td>
Total System Price:
</td>
<td>
$<input type="text" name="total" readonly value="0.00" size="8" id="total">
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
Full Name:
</td>
<td>
<input type="text" name="customer" />
</td>
</tr>
<tr>
<td>
Street Address:
</td>
<td>
<input type="text" name="address" />
</td>
</tr>
<tr>
<td>
City:
</td>
<td>
<input type="text" name="city" />
</td>
</tr>
<tr>
<td>
State:
</td>
<td>
<select name="state">
<option value=""></option>
<option value="DE">DE</option>
<option value="NJ">NJ</option>
<option value="NY">NY</option>
<option value="PA">PA</option>
</select>
</td>
</tr>
<tr>
<td>
Zip:
</td>
<td>
<input type="text" name="zip" />
</td>
</tr>
<tr>
<td>
Phone Number:
</td>
<td>
<input type="text" name="phone" />
</td>
</tr>
<tr>
<td>
Email Address:
</td>
<td>
<input type="text" name="email">
</td>
</tr>
</form>
<tr>
<td>
</td>
</tr>
<tr>
<td>
<input type="button" value="Submit Order" onClick="doSubmit()" />
</td>
<td>
<input type="button" value="Clear Form" onClick="doClear()" />
</td>
</tr>
</table>
</td>
</tr>
</table>
</body>
解决方法:
这只是一个示例代码,它根据单选按钮选择更改div的背景
HTML
<input type="radio" name="ch" value="http://www.menucool.com/slider/prod/image-slider-1.jpg" onClick="CB(this.value);" />
URL 1
<input type="radio" name="ch" value="http://www.menucool.com/slider/prod/image-slider-3.jpg" onClick="CB(this.value);" />
URL 2
<div id="back">
</div>
JAVASCRIPT
function CB(bg) {
var url;
if(bg=="yourvalue1")
{
url="http://www.menucool.com/slider/prod/image-slider-1.jpg";
document.getElementById("ecard").style.backgroundImage = "url(" + url + ")";
}
else if(bg=="yourvalue2")
{
url="http://www.menucool.com/slider/prod/image-slider-3.jpg";
document.getElementById("ecard").style.backgroundImage = "url(" + url + ")";
}
}
内容总结
以上是互联网集市为您收集整理的基于HTML / JavaScript中的单选按钮选择更改图像全部内容，希望文章能够帮你解决基于HTML / JavaScript中的单选按钮选择更改图像所遇到的程序开发问题。 如果觉得互联网集市技术教程内容还不错，欢迎将互联网集市网站推荐给程序员好友。
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