在我的Tumblr博客上,我试图使用jQuery选择具有特定比例的照片条目(img),并以某些方式调整它们的大小。
具体来说:如果图像的宽度大于250px,请调整其大小,以使高度为250px,宽度为“自动”。如果图像的高度大于250px,请调整其大小,以使宽度为250px,高度为“自动”。最后,如果图片是完美的正方形,请将其大小调整为250px x 250px。
这是我目前正在使用的。如果编码很奇怪,请原谅我,老实说,我一直在弄弄它,直到得到一些想要的结果...

<script>
$(document).ready(function() {
    $('.photo_post img').each(function() {
        var maxWidth = 250; // Max width for the image
        var maxHeight = 250;    // Max height for the image
        var ratio = 0;  // Used for aspect ratio
        var width = $(this).width();    // Current image width
        var height = $(this).height();  // Current image height

    // Check if the current width is larger than the max
    if(height > maxHeight){
        ratio = maxWidth / width;   // get ratio for scaling image
        $(this).css("width", maxWidth); // Set new width
        $(this).css("height", height * ratio);  // Scale height based on ratio
        height = height * ratio;    // Reset height to match scaled image
        width = width * ratio;    // Reset width to match scaled image
    }

    // Check if current height is larger than max
    if(height < maxHeight){
        ratio = maxHeight / height; // get ratio for scaling image
        $(this).css("height", maxHeight);   // Set new height
        $(this).css("width", width * ratio);    // Scale width based on ratio
        width = width * ratio;    // Reset width to match scaled image
        height = height * ratio;    // Reset height to match scaled image
    }
});
});
</script>


我的问题是,它不能在所有照片上正常工作。
我对jQuery并不是很熟悉,所以深思熟虑和详尽的答案是值得的。

最佳答案

您需要检查图像是纵向还是横向,然后根据该图像调整尺寸。

更新的JS:

$(document).ready(function() {
$('.photo_post img').each(function() {
    var maxWidth = 250; // Max width for the image
    var maxHeight = 250;    // Max height for the image
    var ratio = 0;  // Used for aspect ratio
    var width = $(this).width();    // Current image width
    var height = $(this).height();  // Current image height


    // Portrait
    if (height > width) {

        // Check if the current height is larger than the max
        if(height > maxHeight){
            ratio = maxHeight / height; // get ratio for scaling image
            $(this).css("height", maxHeight);   // Set new height
            $(this).css("width", width * ratio);    // Scale width based on ratio
            width = width * ratio;    // Reset width to match scaled image
            height = height * ratio;    // Reset height to match scaled image

        }
    }
    // Landscape
    else {

        // Check if the current width is larger than the max
        if(width > maxWidth){
            ratio = maxWidth / width;   // get ratio for scaling image
            $(this).css("width", maxWidth); // Set new width
            $(this).css("height", height * ratio);  // Scale height based on ratio
            height = height * ratio;    // Reset height to match scaled image
            width = width * ratio;    // Reset width to match scaled image
        }
    }
});


});

07-24 17:32