Question

我有一个图像滑块，每5秒更换一次图像，但是当我将鼠标悬停在div img上时，我希望滑块暂停。有没有办法在悬停时暂停'theRotator'功能，然后在鼠标离开div后重新启动它？谢谢大家！

function theRotator() {
    //Set the opacity of all images to 0
    $('div.rotator ul li').css({opacity: 0.0});

    //Get the first image and display it (gets set to full opacity)
    $('div.rotator ul li:first').css({opacity: 1.0});

    //Call the rotator function to run the slideshow,

    setInterval('rotate()',5000);

}

$(document).ready(function() {      
    //Load the slideshow
    theRotator();
    $('div.rotator').fadeIn(1000);
    $('div.rotator ul li').fadeIn(1000); // tweek for IE
});

Answer 1

您需要检索setInterval函数返回的间隔句柄。另外，我使用mouseenter和mouseleave，因为它们更适合您想要的功能。

function theRotator() {
    //Set the opacity of all images to 0
    $('div.rotator ul li').css({opacity: 0.0});

    //Get the first image and display it (gets set to full opacity)
    $('div.rotator ul li:first').css({opacity: 1.0});

    //Call the rotator function to run the slideshow,

    window.rotatorInterval = setInterval(rotate,5000);
}

$(document).ready(function() {

    //Load the slideshow
    theRotator();

    $('div img').mouseenter(function(){
         clearInterval(window.rotatorInterval);
    }).mouseleave(function() {
         window.rotatorInterval = setInterval(rotate, 5000);
    });

    $('div.rotator').fadeIn(1000);
    $('div.rotator ul li').fadeIn(1000); // tweek for IE
});

Answer 2

您可以执行类似

的操作

var rotate = true;

$('img').on({
    mouseenter: function() {
        rotate = false;
    },
    mouseleave: function() {
        rotate = true;
    }
});

并检查rotate()功能

中的该标志

Answer 3

您只需要在鼠标悬停时清除超时，然后在mouseout上重新创建它，如下所示：

var interval;

function theRotator() {
    $('div.rotator ul li').css({opacity: 0.0});
    $('div.rotator ul li:first').css({opacity: 1.0});
    interval = setInterval(rotate, 5000);
}

$(document).ready(function() {
    theRotator();
    $('div.rotator').fadeIn(1000);
    $('div.rotator ul li').fadeIn(1000); // tweek for IE

    $('div.rotator ul li').hover(function() {
        clearInterval(interval);
    },
    function() {
        interval = setInterval(rotate, 5000);
    });
});

暂停元素悬停时的功能

3 个答案: