手动调整table列宽的js效果

IT少年 2014-04-08

展开全文

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www./TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<meta charset="gbk">
<title>table</title>
</head>
<body>
<table id="tb_1" cellspacing="0" cellpadding="2" width="100%" border="1">
<tbody>
<tr align="center" bgcolor="#dcdcdc">
<td style="width:100px;">用户编号</td>
<td>试用时间</td><td>转正时间</td><td>性别</td><td>姓名拼音</td>
<td>生日时间</td><td>民族</td><td>身高</td>
</tr>
<tr>
<td>2000001</td>
<td>1997-3-13</td><td>1997-3-13</td><td>1</td><td>WZJ</td>
<td>1965-3-13</td><td>汉</td><td>171</td>
</tr>
<tr>
<td>2000045</td>
<td>2001-2-15</td><td>2001-3-15</td><td>0</td><td>WY</td>
<td>1978-8-5</td><td>汉</td><td>162</td>
</tr>
<tr>
<td>2000046</td>
<td>2001-2-23</td><td>2001-3-23</td><td>0</td><td>LQ</td>
<td>2001-2-23</td><td>汉</td><td>171</td>
</tr>
</tbody>
</table>
<script type="text/javascript">
    var tTD; //用来存储当前更改宽度的Table Cell,避免快速移动鼠标的问题
    var table = document.getElementById("tb_1");
    for (j = 0; j < table.rows[0].cells.length; j++) {
        table.rows[0].cells[j].onmousedown = function () {
            //记录单元格
            tTD = this;
            if (event.offsetX > tTD.offsetWidth - 10) {
                tTD.mouseDown = true;
                tTD.oldX = event.x;
                tTD.oldWidth = tTD.offsetWidth;
            }
            //记录Table宽度
            //table = tTD; while (table.tagName != ‘TABLE') table = table.parentElement;
            //tTD.tableWidth = table.offsetWidth;
        };
        table.rows[0].cells[j].onmouseup = function () {
            //结束宽度调整
            if (tTD == undefined) tTD = this;
            tTD.mouseDown = false;
            tTD.style.cursor = 'default';
        };
        table.rows[0].cells[j].onmousemove = function () {
            //更改鼠标样式
            if (event.offsetX > this.offsetWidth - 10)
                this.style.cursor = 'col-resize';
            else
                this.style.cursor = 'default';
            //取出暂存的Table Cell
            if (tTD == undefined) tTD = this;
            //调整宽度
            if (tTD.mouseDown != null && tTD.mouseDown == true) {
                tTD.style.cursor = 'default';
                if (tTD.oldWidth + (event.x - tTD.oldX) > 0)
                    tTD.width = tTD.oldWidth + (event.x - tTD.oldX);
                //调整列宽
                tTD.style.width = tTD.width;
                tTD.style.cursor = 'col-resize';
                //调整该列中的每个Cell
                table = tTD; while (table.tagName != 'TABLE') table = table.parentElement;
                for (j = 0; j < table.rows.length; j++) {
                    table.rows[j].cells[tTD.cellIndex].width = tTD.width;
                }
                //调整整个表
                //table.width = tTD.tableWidth + (tTD.offsetWidth – tTD.oldWidth);
                //table.style.width = table.width;
            }
        };
    }
</script>
</body>
</html>