Jquery调整图像大小

Question

我想开始讨论使用 jQuery 调整图像大小。

这就是我的贡献:但我认为我距离解决方案还很远。 裁剪怎么样？ 谁能帮助我？

$(document).ready(function() {
    $('.story-small img').each(function() {
    var maxWidth = 100; // Max width for the image
    var maxHeight = 100;    // 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(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
    }

    // 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
    }
});

});

Answer 1

您需要在第一个条件后重新计算宽度和高度。这是整个脚本的代码:

$(document).ready(function() {
    $('.story-small img').each(function() {
    var maxWidth = 100; // Max width for the image
    var maxHeight = 100;    // 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(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
    }

    var width = $(this).width();    // Current image width
    var height = $(this).height();  // Current image height

    // 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
    }
});