使用javascript动态链接html页面

Question

This is the code to store five images for an HTML page and then the function is used to display those five images one at a time.

This code works and one can scroll through the five images.

My question is whether it is possible to direct to different HTML page on the basis of image shown at a particular time

<script type="text/javascript">
    var curImage = 0;
    var cImages = ['1.jpg','2.jpg','3.jpg','4.jpg','5.jpg'];

    function townHousePics(direction) {
        if (direction == 'next') {
            curImage++;
            if (curImage == 5) {
                curImage = 0;
            }        
        } 
        else 
        {
            curImage--;
            // even reset the counter here when
            // its getting 0
        }
        document.images[0].src = cImages[curImage];
    }
</script>

Answer 1

html setup

<a href='' id='my-anchor-name'><img id='my-image-name' src=''/></a>

javascript

<script type="text/javascript">
    var curImage = 0;
    var cImages = [{aHref:'target1.html',imgHref:'1.jpg'},{aHref:'target2.html',imgHref:'2.jpg'},
{aHref:'target3.html',imgHref:'3.jpg'},
{aHref:'target4.html',imgHref:'4.jpg'},
{aHref:'target5.html',imgHref:'5.jpg'}
];
         function townHousePics(direction) {
                     if (direction == 'next') {
                         curImage = (curImage++)%cImages.length ;
                      else {
                         curimage = (curImage--)%cImages.length;
                     }
                     var img = document.getElementById('my-image-name');
                     var anchor = document.getElementById('my-anchor-name')
                     img.src = cImages[curImage].imgHref;
                     anchor.href = cImage[curImage].aHref;
             }
</script>

Answer 2

Automatic file-name-based Replacement

Suppose you had a link like the following:

<a href="1.html" id="viewLarge">View Large</a>

That you wanted to dynamically change with each image. When image 2.jpg becomes the primary, we swap out 1.html for 2.html. We could modify the last line of your code to this:

// Updated Source of First Image
document.images[0].src = cImages[curImage];
// Parse Image Number from String
var currentNumber = parseInt( curImage, 10 ); // 2.jpg becomes 2
// Get a reference to our 'viewLarge' link
var ourLink = document.getElementById("viewLarge");
// 1.html becomes 2.html when 2 is the currentNumber;
ourLink.href = ourLink.href.replace( /^([0-9]+)/, currentNumber );

Note, though this works it restricts you to having a 1.html for your 1.jpg . This may be undesirable. You may want 1.jpg to go with CityLoft.html . If that's the case, you'd want to associate the image with the proper url in your cImages object:

Use Objects to store Related Data

var cImages = [{image: '1.jpg', page: 'cityLoft.html'},
               {image: '2.jpg', page: 'townhome.html'}];

Once you've made this change, you only need to restore the references in your code. For instance, we would change the following:

document.images[0].src = cImages[curImage];

To this:

document.images[0].src = cImages[curImage].image;

We would also need to update our code that links to the relevant page as well:

document.getElementById("viewLarge").href = cImages[curImage].page;

That's it!