做了一个jquery插件,使表格的标题列可左右拉伸

 示例下载

插件名称命名为:jquery.tableresize.js,代码如下:

/*

Writen by mlcactus, 2014-11-24

这是我封装的一个jquery插件,能够使table的各列可以左右拉伸,从而使宽度变小或变大

用法:$("#table_id").tableresize();

*/

(function ($) {

    $.fn.tableresize = function (options) {

        var defaults = {

            //当table的宽度到达默认最大值时,是否继续增大以至于出现横向滚动条

            resizeTable: true

        }; 

        var opts = $.extend(defaults, options);





        var _document = $("body");

        //设定user-select样式,防止内容被选中

        var set_user_select = function (jqueryobj, val) {

            jqueryobj.css("-moz-user-select", val).css("-webkit-user-select", val).css("-ms-user-select", val);

        };

        $(this).each(function () {

            if (!$.tableresize) {

                $.tableresize = {};

            }

            var _table = $(this);

            //设定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();

            //设定临时变量存放对象

            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.outerWidth(), height = _this.outerHeight(), right = left + width, bottom = top + height, pageX = e.pageX, pageY = e.pageY;

                var leftside = !_firstth.is(_this) && Math.abs(left - pageX) <= 5, rightside = Math.abs(right - pageX) <= 5;

                if (cobjs._currentLeft || pageY > top && pageY < bottom && (leftside || rightside)) {

                    _document.css("cursor", "e-resize");

                    set_user_select(_table, "none");

                    if (!cobjs._currentLeft) {

                        if (leftside) {

                            cobjs._currentObj = _this.prev();

                        }

                        else {

                            cobjs._currentObj = _this;

                        }

                    }

                }

                else {

                    _document.css("cursor", "auto");

                    cobjs._currentObj = null;

                }

            });

            ths.mouseout(function (e) {

                if (!cobjs._currentLeft) {

                    cobjs._currentObj = null;

                    _document.css("cursor", "auto");

                    set_user_select(_table, "auto");

                }

            });

            _document.mousedown(function (e) {

                if (cobjs._currentObj) {

                    cobjs._currentLeft = e.pageX;

                }

                else {

                    cobjs._currentLeft = null;

                }

            });

            _document.mouseup(function (e) {

                if (cobjs._currentLeft) {

                    var changeWidth = e.pageX - cobjs._currentLeft;

                    cobjs._currentObj.width(cobjs._currentObj.width() + changeWidth);

                    if (opts.resizeTable) {

                        _table.width(_table.width() + changeWidth);

                    }

                }

                cobjs._currentObj = null;

                cobjs._currentLeft = null;

                _document.css("cursor", "auto");

                set_user_select(_table, "auto");

            });

        });

    };

})(jQuery);

 

页面代码为:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

    <style type="text/css" >

        td{ text-align:center;}

    </style>

    <script type="text/javascript" src="script/jquery-1.10.2.js"></script>

    <script type="text/javascript" src="script/jquery.tableresize.js"></script>

    <script type="text/javascript">

        $(document).ready(function () {

             //该设置使table达到默认最大宽度时,将不再继续变宽

            var ops = { resizeTable: false };

            //使两张table同时支持左右拉伸

            $("table").tableresize(ops);

        });

    </script>

</head>

<body>

    表格1<br/>

    <table cellspacing="0" border="1" style="border-collapse:collapse;" rules="all">

		<tbody><tr>

			<td style="width:200px;">ID</td><td style="width:200px;">名字</td><td style="width:200px;">年纪</td><td style="width:200px;">地址</td><td style="width:200px;">电话</td>

		</tr><tr>

			<td>22</td><td>Name:44</td><td>Age:23</td><td>Address:47</td><td>Phone:15</td>

		</tr><tr>

			<td>28</td><td>Name:42</td><td>Age:68</td><td>Address:30</td><td>Phone:50</td>

		</tr><tr>

			<td>29</td><td>Name:63</td><td>Age:48</td><td>Address:90</td><td>Phone:76</td>

		</tr>

	</tbody>

    </table>

    <br/>表格2<br/>

    <table cellspacing="0" border="1" style="border-collapse:collapse;" rules="all">

		<tbody><tr>

			<td style="width:200px;">ID</td><td style="width:200px;">名字</td><td style="width:200px;">年纪</td><td style="width:200px;">地址</td><td style="width:200px;">电话</td>

		</tr><tr>

			<td>22</td><td>Name:44</td><td>Age:23</td><td>Address:47</td><td>Phone:15</td>

		</tr><tr>

			<td>28</td><td>Name:42</td><td>Age:68</td><td>Address:30</td><td>Phone:50</td>

		</tr>

	</tbody></table>



</body>

</html>

 

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