在单击时暂停并播放 JavaScript 滑块事件

pause and play javascript slider event onclick

本文关键字：JavaScript 事件播放单击暂停更新时间：2023-09-26

我正在完成对我的网站的编码并向登录页面添加图像滑块。我对javascript很陌生，所以我复制并粘贴了一个图像滑块演示，并根据我的需要对其进行了一些调整。我有 4 张图像，每隔一段时间就会淡入下一个图像。我现在想做的是拥有它，以便当您单击任何图像时，自动播放幻灯片将暂停，然后您可以单击以恢复。我整天都在浏览论坛和教程，但我太迷茫了。任何帮助将不胜感激。谢谢。

.HTML

 <ul id="slider">
  <li><img src="images/img1.png"/></li>
  <li><img src="images/img2.png"/></li>
  <li><img src="images/img3.png"/></li>
  <li><img src="images/img4.png"/></li>
</ul>

JavaScript

<script>
$(function () {
    var change_img_time = 5000;
    var transition_speed = 100;
    var simple_slideshow = $("#slider"),
        listItems = simple_slideshow.children('li'),
        listLen = listItems.length,
        i = 0,
        changeList = function () {
            listItems.eq(i).fadeOut(transition_speed, function () {
                i += 1;
                if (i === listLen) {
                    i = 0;
                }
                listItems.eq(i).fadeIn(transition_speed);
            });
        };
    listItems.not(':first').hide();
    setInterval(changeList, change_img_time);
});
</script>

尝试

$(function () {

    var change_img_time = 5000;
    var transition_speed = 100;
    var simple_slideshow = $("#slider"),
        listItems = simple_slideshow.children('li'),
        listLen = listItems.length,
        i = 0,
        changeList = function () {
            listItems.eq(i).fadeOut(transition_speed, function () {
                i += 1;
                if (i === listLen) {
                    i = 0;
                }
                listItems.eq(i).fadeIn(transition_speed);
            });
        };
    listItems.not(':first').hide();
    var timer = setInterval(changeList, change_img_time);
    listItems.click(function () {
        if (timer) {
            clearTimeout(timer);
            timer = undefined;
        } else {
            timer = setInterval(changeList, change_img_time);
        }
    })
});

演示：小提琴

我尝试使用 jquery 在以下 URL 为您创建一个示例演示。

http://jsfiddle.net/codebombs/ukNmT/

请检查并根据您的需要进行修改。

//To store timeout id
var timeoutId;
var slideImage = function( step ) {
    if ( step == undefined ) step = 1;
    //Clear timeout if any
    clearTimeout ( timeoutId );
    //Get current image's index
    var indx = $('.item:visible').index('.item');
    //If step == 0, we don't need to do any fadein our fadeout
    if ( step != 0 ) {
       //Fadeout this item
       $('.item:visible').fadeOut();
    }
    //Increment for next item
    indx = indx + step ;
    //Check bounds for next item
    if ( indx >= $('.item').length ) {
        indx = 0;
    } else if ( indx < 0 ) {
        indx = $('.item').length - 1;
    }
    //If step == 0, we don't need to do any fadein our fadeout
    if ( step != 0 ) {
       //Fadein next item
       $('.item:eq(' + indx + ')').fadeIn();
    }
    //Set Itmeout
    timeoutId = setTimeout ( slideImage, 5000 );
};
//Start sliding
slideImage(0);
//When clicked on prev
$('#prev').click(function() {
    //slideImage with step = -1
    slideImage ( -1 );   
});
//When clicked on next
$('#next').click(function() {
     //slideImage with step = 1
     slideImage ( 1 );
});
//When clicked on Pause
$('#pause').click(function() {
   //Clear timeout
   clearTimeout ( timeoutId );    
    //Hide Pause and show Play
    $(this).hide();
    $('#play').show();
});
//When clicked on Play
$('#play').click(function() {
   //Start slide image
   slideImage(0);
   //Hide Play and show Pause
   $(this).hide();
   $('#pause').show();    
});