轮播脚本中的Jquery函数定义

时间:2011-07-20 09:09:53

标签: jquery definition carousel

我有一个带有LOOP的轮播图像的脚本

$(document).ready(function() {

//rotation speed and timer
var speed = 5000;
var run = setInterval(rotate(), speed);   

//grab the width and calculate left value
var item_width = $('#slides li').outerWidth(); 
var left_value = item_width * (-1); 

//move the last item before first item, just in case user click prev button
$('#slides li:first').before($('#slides li:last'));

//set the default item to the correct position 
$('#slides ul').css({'left' : left_value});

//if user clicked on next button
function rotate() {
    //get the right position
        var left_indent = parseInt($('#slides ul').css('left')) - item_width;

        //slide the item
        $('#slides ul').animate({'left' : left_indent}, 3000, function () {

            //move the first item and put it as last item
            $('#slides li:last').after($('#slides li:first'));                  

            //set the default item to correct position
            $('#slides ul').css({'left' : left_value});

        });

        //cancel the link behavior
        return false;
}       

});

但是我在firebug中收到了这个javascript错误:

无用的setInterval调用(参数周围缺少引号?) [Interrompi per questo errore] var run = setInterval(rotate(),speed);

我认为它是旋转功能定义的错误!

1 个答案:

答案 0 :(得分:4)

这意味着你应该写:

 var run = setInterval(rotate, speed);   

而不是

 var run = setInterval(rotate(), speed);   

因为你需要将函数的引用传递给setInterval,你传递的是函数rotate()的返回值;