本文实例讲述了jquery实现根据浏览器窗口大小自动缩放图片的方法。分享给大家供大家参考。具体如下：
(function($){
$.fn.resizeimage = function(){
var imgLoad = function (url, callback) {
var img = new Image();
img.src = url;
if (img.complete) {
callback(img.width, img.height);
} else {
img.onload = function () {
callback(img.width, img.height);
img.onload = null;
};
};
};
var original = {
width:$(window).width()
};
return this.each(function(i,dom){
var image = $(this);
imgLoad(image.attr('src'),function(){
var img = {
width:image.width(),
height:image.height()
},percentage=1;
if(img.width<original.width){
percentage = 1;
}else{
percentage = (original.width)/img.width;
}
image.width(img.w=img.width*percentage-30).height(img.h=img.height*percentage);
$(window).resize(function(){
var w = $(this).width();
percentage = w/img.width>1?1:w/img.width;
var newWidth = img.width*percentage-30;
var newHeight = img.height*percentage;
image.width(newWidth).height(newHeight);
});
});
});
};
})(jQuery);
希望本文所述对大家的jquery程序设计有所帮助。