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预警：我是大新手。

我有这段代码我正在使用它根据浏览器窗口的大小调整我网站上的图像大小。问题是，图像也被放大到原始大小，创建丑陋和像素化的图像。我想知道是否：

有一种方法可以添加一些代码，以防止图像放大到超过其原始上传大小。

任何帮助将不胜感激。

这是我目前拥有的：

(function( $ ) {

$.fn.aeImageResize = function( params ) {

var aspectRatio = 0
// Nasty I know but it's done only once, so not too bad I guess
// Alternate suggestions welcome :)
,   isIE6 = $.browser.msie && (6 == ~~ $.browser.version)
;

// We cannot do much unless we have one of these
if ( !params.height && !params.width ) {
return this;
}

// Calculate aspect ratio now, if possible
if ( params.height && params.width ) {
aspectRatio = params.width / params.height;
}

// Attach handler to load
// Handler is executed just once per element
// Load event required for Webkit browsers
return this.one( "load", function() {

// Remove all attributes and CSS rules
this.removeAttribute( "height" );

this.style.height = "";

var imgHeight = this.height
, imgWidth = this.width
, imgAspectRatio = imgWidth / imgHeight
, bxHeight = params.height
, bxWidth = params.width
, bxAspectRatio = aspectRatio;

// Work the magic!
// If one parameter is missing, we just force calculate it
if ( !bxAspectRatio ) {
if ( bxHeight ) {
bxAspectRatio = imgAspectRatio + 1;
} else {
bxAspectRatio = imgAspectRatio - 1;
}
}

// Only resize the images that need resizing


if ( imgAspectRatio > bxAspectRatio ) {
bxHeight = ~~ ( imgHeight / imgWidth * bxWidth );
} else {
bxWidth = ~~ ( imgWidth / imgHeight * bxHeight );
}

this.height = bxHeight-100;

})
.each(function() {

// Trigger load event (for Gecko and MSIE)
if ( this.complete || isIE6 ) {
$( this ).trigger( "load" );
}
});
};
})( jQuery );
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1 回答 1

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在函数的开头试试这个：

if (params.height < this.height ||
    params.width < this.width)
{
  return this;
}
于 2012-04-21T20:55:10.947 回答