89 lines
1.8 KiB
HTML
89 lines
1.8 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<title></title>
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<style>
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* {
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margin: 0;
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padding: 0;
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}
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#adv {
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width: 940px;
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margin: 0 auto;
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}
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#adv ul {
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width: 120px;
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height: 30px;
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margin: 0 auto;
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position: relative;
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top: -30px;
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}
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#adv li {
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width: 30px;
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height: 30px;
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list-style: none;
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float: left;
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color: #ccc;
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cursor: pointer;
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}
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#adv li:first-child {
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color: lightseagreen;
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}
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</style>
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</head>
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<body>
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<div id="adv">
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<img src="img/slide-1.jpg" alt="">
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<ul>
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<li class="dot">●</li>
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<li class="dot">●</li>
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<li class="dot">●</li>
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<li class="dot">●</li>
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</ul>
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</div>
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<script>
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var img = document.querySelector('#adv>img');
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var items = document.querySelectorAll('#adv li');
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var timerId = 0;
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for (var i = 0; i < items.length; i += 1) {
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items[i].index = i;
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items[i].addEventListener('mouseover', function(evt) {
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index = evt.target.index;
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changeItemsColor(index);
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img.src = 'img/' + images[index];
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if (timerId != 0) {
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window.clearInterval(timerId);
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timerId = 0;
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}
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});
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items[i].addEventListener('mouseout', startIt);
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}
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var images = ['slide-1.jpg', 'slide-2.jpg', 'slide-3.jpg', 'slide-4.jpg'];
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var index = 0;
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startIt();
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function startIt() {
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if (timerId == 0) {
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timerId = window.setInterval(function() {
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index += 1;
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index %= images.length;
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changeItemsColor(index);
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img.src = 'img/' + images[index];
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}, 2000);
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}
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}
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function changeItemsColor(index) {
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for (var i = 0; i < items.length; i += 1) {
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items[i].style.color = '#ccc';
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}
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items[index].style.color = 'lightseagreen';
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}
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</script>
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</body>
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</html>
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