我试图在每次页面刷新时有不同的图像加载。我试过这段代码:
<!DOCTYPE html><html><body> <script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script><script type="text/javascript" src="jquery-source"></script> <script>$(document).load( ... )</script><script type="text/javascript">(function($){
$.randomImage = {
defaults: {
//you can change these defaults to your own preferences.
path: 'http://mysite.com/images/', //change this to the path of your images
myImages: ['Testimonial1.png', 'Testimonial2.png', 'Testimonial3.png', 'Testimonial4.png', 'Testimonial5.png' ] //put image names in this bracket. ex: 'harold.jpg', 'maude.jpg', 'etc'
}
}
$.fn.extend({
randomImage:function(config) {
var config = $.extend({}, $.randomImage.defaults, config);
return this.each(function() {
var imageNames = config.myImages;
//get size of array, randomize a number from this
// use this number as the array index
var imageNamesSize = imageNames.length;
var lotteryNumber = Math.floor(Math.random()*imageNamesSize);
var winnerImage = imageNames[lotteryNumber];
var fullPath = config.path + winnerImage;
//put this image into DOM at class of randomImage
// alt tag will be image filename.
$(this).attr( {
src: fullPath,
alt: winnerImage
});
});
}
});
}(jQuery));</script>
</body>
</html>
但我是一个jQuery和JavaScript新手,它对我不起作用。我肯定做错了什么,但我不知道从哪里开始使用jQuery。我很确定这是一个语法错误。谁能帮助我?
谢谢!
答案 0 :(得分:1)
有些来回,但这里是代码,这应该没有问题:
https://gist.github.com/AstDerek/5841966
原始答案
您的代码有效http://jsfiddle.net/AstDerek/AC6tu/
如果仍有问题,请尝试检查jQuery是否已加载。如果对匿名函数的调用是在括号的第一个匹配项之外进行的,则浏览器可能会抱怨:
错:
})(jQuery);
右:
}(jQuery));