HTML表固定标头,使用jQuery进行最大列宽和填充

时间:2013-06-10 14:07:00

标签: javascript jquery html css

我有一个带有标题的HTML表格,一旦用户向下滚动浏览器,我就会使用jQuery锁定到浏览器的顶部。我已经在SO和其他地方看到了很多针对这个特定问题的解决方案,但是无法克服我遇到的障碍。

我已经能够让我的jQuery锁定标题了(我的< tr>在我的< thead>中包含我的列标题,我已经给了< tr>一个ID “theadTrId”)。

$(document).ready(function () {
   var widths = new Array();

   //create array of <th> widths
   var i = 0;
   $('th').each(function () {
       widths[i] = $(this).width();
       i++;
   });

   var elementPosTop = $('#theadTrId').offset().top;
   $(window).scroll(function () {
       SetWidths();
   });

   var SetWidths = function () {
       var wintop = $(window).scrollTop();

       if (wintop > elementPosTop) {
           $('#theadTrId').css({ "position": "fixed", "top": "0" });

           //<th> and <td> widths in 1st column
           $('#th1').width(widths[0]);
           $('#td1').width(widths[0]);

           //<th> and <td> widths in 2nd column
           $('#th2').width(widths[1]);
           $('#td2').width(widths[1]);

           //x number of other columns with same logic...
       } else {
           $('#theadTrId').css({ "position": "inherit" });
       }
   };
});

这样可以正常工作并在向下滚动时将标题锁定到窗口顶部,并在向上滚动时将其恢复为默认值,但是对于我的生活,我无法得到&lt; th>和&lt; td&gt;添加以下CSS时要排列的列宽:

td {
    max-width: 200px;
}
td, th {
    padding: 10px;
}

我应该删除该样式,所有标题及其列都完美排列。此样式是必需的,无法删除。表宽度也需要设置为100%。有什么建议吗?

jsFiddle here(如果删除最后2个CSS属性,可以看到所需的行为,问题在Firefox中最为明显):http://jsfiddle.net/aKe6j/59/

1 个答案:

答案 0 :(得分:3)

试试这个(the fiddle),我认为它可以是解决方案:

    <style>
    table {
        width: 100%;
    }
    td {
        background-color: #BCE6E6;    
    }
    #theadTrId {
        background-color: #6699FF;
    }
    #th1 {
        width: 110px;
    }
    #th2 {
        width: 235px;
    }
    #th3 {
        width: 80px;
    }
    td {
        max-width: 200px;
    }
    td, th {
        padding: 10px;
    }

    </style>
    </head>
    <table border="1">
        <thead>
            <tr id="theadTrId">
                <th id="th1">Column 1</th>
                <th id="th2">Column 2</th>
                <th id="th3">Column 3</th>
            </tr>
        </thead>

        <tbody id="tbody">

        </tbody>
    </table>
    <script>
    //loop to add 40 rows
for (var i=0;i < 41; i++)
{ 
    var jj = 1;
    $("#tbody").append("<tr><td id='td"+(jj++)+"'>Content " + i + "</td><td id='td"+(jj++)+"'>Content " + i + "</td><td id='td"+(jj++)+"'>Content " + i + "</td></tr>")
}

var widths = new Array();
//create array of <th> widths
var i = 0;
$('th').each(function () {
    widths[i] = $(this).context.offsetWidth;

    i++;
});

var elementPosTop = $('#theadTrId').offset().top;
$(window).scroll(function () {
    SetWidths();
});

var SetWidths = function () {
       var wintop = $(window).scrollTop();

       if (wintop > elementPosTop) {
           $('#theadTrId').css({ "position": "fixed", "top": "0" });
           //use the css rulz to change also the max-width for that particular td
           //it can be rolled back afther
           //<th> and <td> widths in 1st column
           $('#th1').css('width',widths[0]);
           $('#td1').css('width',widths[0]);
           $('#td1').css('max-width',widths[0]);
           //<th> and <td> widths in 2nd column
           $('#th2').css('width',widths[1]);
           $('#td2').css('width',widths[1]);
           $('#td2').css('max-width',widths[1]);
           //<th> and <td> widths in 3rd column
           $('#th3').css('width',widths[2]);
           $('#td3').css('width',widths[2]);
           $('#td3').css('max-width',widths[2]);

       } else {
           $('#theadTrId').css({ "position": "inherit" });
           // if you need the max-width again 
           $('#td0').css('max-width',200);
           $('#td1').css('max-width',200);
           $('#td2').css('max-width',200);
       }
   };
    </script>