使表格的標題列可左右拉伸jquery插件封裝

2019-11-20 13:53:19

字體：大中小

來源：轉載

供稿：網友

插件名稱命名為:jquery.tableresize.js，代碼如下：

/*
Writen by mlcactus, 2014-11-24
這是我封裝的一個jquery插件，能夠使table的各列可以左右拉伸，從而使寬度變小或變大
用法：
單個table：$("#table_id").tableresize();    
頁面所有table：$("table").tableresize();
*/
(function ($) {
    $.fn.tableresize = function () {
        var _document = $("body");
        $(this).each(function () {
            if (!$.tableresize) {
                $.tableresize = {};
            }
            var _table = $(this);
            //設定ID
            var id = _table.attr("id") || "tableresize_" + (Math.random() * 100000).toFixed(0).toString();
            var tr = _table.find("tr").first(), ths = tr.children(), _firstth = ths.first();
            //設定臨時變量存放對象
            var cobjs = $.tableresize[id] = {};
            cobjs._currentObj = null, cobjs._currentLeft = null;
            ths.mousemove(function (e) {
                var _this = $(this);
                var left = _this.offset().left, top = _this.offset().top, width = _this.width(), height = _this.height(), right = left + width, bottom = top + height, clientX = e.clientX, clientY = e.clientY;
                var leftside = !_firstth.is(_this) && Math.abs(left - clientX) <= 5, rightside = Math.abs(right - clientX) <= 5;
                if (cobjs._currentLeft || clientY > top && clientY < bottom && (leftside || rightside)) {
                    _document.css("cursor", "e-resize");
                    if (!cobjs._currentLeft) {
                        if (leftside) {
                            cobjs._currentObj = _this.prev();
                        }
                        else {
                            cobjs._currentObj = _this;
                        }
                    }
                }
                else {
                    cobjs._currentObj = null;
                }
            });
            ths.mouseout(function (e) {
                if (!cobjs._currentLeft) {
                    cobjs._currentObj = null;
                    _document.css("cursor", "auto");
                }
            });
            _document.mousedown(function (e) {
                if (cobjs._currentObj) {
                    cobjs._currentLeft = e.clientX;
                }
                else {
                    cobjs._currentLeft = null;
                }
            });
            _document.mouseup(function (e) {
                if (cobjs._currentLeft) {
                    cobjs._currentObj.width(cobjs._currentObj.width() + (e.clientX - cobjs._currentLeft));
                }
                cobjs._currentObj = null;
                cobjs._currentLeft = null;
                _document.css("cursor", "auto");
            });
        });
    };
})(jQuery);   