页面中所有图片width、height大小批量设置

须加载jQuery库

代码一：

<script type="text/javascript"> 
    var setNewsImg = function(obj){ 
        $(obj).find('img').each(function(i){ 
            var imgw = $(this).width(); 
            var imgh = $(this).height(); 
            var scale=1; 
            if(imgw>634){ 
                scale = 634/imgw; 
                console.log(scale);
                $(this).height(scale*imgh); 
                $(this).width(scale*imgw); 
            } 
        }); 
    }
</script> 
 
<script>
//调用 
$(function(){ 
    setNewsImg('.news-img'); 
});
</script>

代码二：

$(window).bind("load", function() { 
    // 图片修改大小 
    $('#imglist img').each(function() { 
        var maxWidth = 120; //初始化最大显示宽度
        var maxHeight = 120; //初始化最大显示高度
        var ratio = 0; 
        var width = $(this).width(); 
        var height = $(this).height(); 

        if(width > maxWidth){ 
            ratio = maxWidth / width; 
            $(this).css("width", maxWidth); 
            $(this).css("height", height * ratio); 
            height = height * ratio; 
        } 

        if(height > maxHeight){ 
            ratio = maxHeight / height; 
            $(this).css("height", maxHeight); 
            $(this).css("width", width * ratio); 
            width = width * ratio; 
        } 
    }); 
});

代码三：

<script>
    $(function(){
        $(".daima img").each(function(){
            maxWidth =700;
            ratio = 0;
            width = $(this).width();
            height = $(this).height();
            if(width > maxWidth){
                ratio = maxWidth / width;
                $(this).width(maxWidth);
                height = height * ratio;
                $(this).height(parseInt(height));
            }
        });
    });
</script>

代码四：

<script>
$('#content').find('img').each(function(){
    var img = this;
    if (img.width > 600) {
        img.style.width = "600px";
        img.style.height = "auto";
        //$(img).removeAttr('height');
        var aTag = document.createElement('a');
        aTag.href = img.src;
        aTag.target="_blank";
        $(aTag).addClass('bPic').insertAfter(img).append(img).lightBox(options);
    }
});
</script>