不灭的火

革命尚未成功,同志仍须努力下载JDK17

作者:AlbertWen  添加时间:2015-06-06 18:26:25  修改时间:2025-05-23 21:52:27  分类:06.前端/Vue/Node.js  编辑
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/**
 * 缩略图
 *
 * @param bool isScaling 是否缩放
 * @param int width 宽度
 * @param int height 高度
 * @param string loadindPic 表示“正在加载中”的图片地址
 */
jQuery.fn.LoadImage = function (isScaling, width, height, loadindPic) {
    if (loadindPic == null) {
        loadindPic = "../images/msg_img/loading.gif";
    }
 
    return this.each(function () {
        var _this = $(this);
        var src = $(this).attr("src")
            var img = new Image();
        img.src = src;
 
        // 自动缩放图片
        var autoScaling = function () {
            if (isScaling) {
                if (img.width > 0 && img.height > 0) {
                    if (img.width / img.height >= width / height) {
                        if (img.width > width) {
                            _this.width(width);
                            _this.height((img.height * width) / img.width);
                        } else {
                            _this.width(img.width);
                            _this.height(img.height);
                        }
                    } else {
                        if (img.height > height) {
                            _this.height(height);
                            _this.width((img.width * height) / img.height);
                        } else {
                            _this.width(img.width);
                            _this.height(img.height);
                        }
                    }
                }
            }
        }
 
        // 处理ff下会自动读取缓存图片
        if (img.complete) {
            autoScaling();
            return;
        }
        $(this).attr("src", "");
        var loading = $("<img alt=\"加载中...\" title=\"图片加载中...\" src=\"" + loadindPic + "\" />");
 
        _this.hide();
        _this.after(loading);
        $(img).load(function () {
            autoScaling();
            loading.remove();
            _this.attr("src", this.src);
            _this.show();
            //$('.photo_prev a,.photo_next a').height($('#big-pic img').height());
        });
    });
}
 
 
// 应用举例
$(function () {
    $('#Article .content img').LoadImage(true, 660, 660, 'http://127.0.0.12:8088/statics/images/s_nopic.gif');
})