Question

我需要你的帮助。

在现有的javascript专家的帮助下，我能够创建一个用户可以使用它们向上和向下箭头键进行搜索的表格，以及允许用户点击一行来选择并突出显示它。

现在我想修改我现有的功能，以便每当用户点击或使用他们的箭头键导航到表格中的选定行时，id就像从中提取信息（数据）行并使用它来填充下面的输入框列表。如何修改javascript编码以便允许我这样做？

<!DOCTYPE html>
<html>
<head>
<style type="text/css">
#mstrTable tr.normal td {
    color: #235A81;
    background-color: white;
}
#mstrTable tr.highlighted td {
    color: #FFFFFF;
    background-color: #235A81;
}
</style>
<script type='text/javascript'>
function test() {

var table = document.getElementById("mstrTable");
var thead = table.getElementsByTagName("thead")[0];
var tbody = table.getElementsByTagName("tbody")[0];
var ishigh;

tbody.onclick = function (e) {
  e = e || window.event;
  var td = e.target || e.srcElement
  var row = td.parentNode;
  if (ishigh&&ishigh!=row){
    ishigh.className='';
  }
  row.className = row.className==="highlighted" ? "" : "highlighted";
  ishigh=row;
}

document.onkeydown = function(e){
    e = e || event;
    var code = e.keyCode, rowslim = table.rows.length - 2, newhigh;
    if(code === 38){ //up arraow
        newhigh = rowindex(ishigh) - 2;
        if(!ishigh || newhigh < 0){return GoTo('mstrTable', rowslim);}
        return GoTo('mstrTable', newhigh);
    } else if (code === 40){ //down arrow
        newhigh = rowindex(ishigh);
        if(!ishigh || newhigh > rowslim){return GoTo('mstrTable', 0);}
        return GoTo('mstrTable', newhigh);
    }
}

function GoTo(id,nu){
  var obj=document.getElementById(id),
      trs=obj.getElementsByTagName('TR');
  nu = nu + 1;
  if (trs[nu]){
    if (ishigh&&ishigh!=trs[nu]){
      ishigh.className='';
    }
    trs[nu].className = trs[nu].className=="highlighted" ? "" : "highlighted";
    ishigh=trs[nu];
   }
}

function rowindex(row){
    var rows = table.rows, i = rows.length;
    while(--i > -1){
        if(rows[i] === row){return i;}
    }
}

}//end of nested function

</script>


</head>
<body>
  <table id="mstrTable" cellspacing="1" border="1">
    <thead>
        <tr>
            <th>first name</th>
            <th>last name</th>
            <th>age</th>
            <th>total</th>
            <th>discount</th>
            <th>diff</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>peter</td>
            <td>parker</td>
            <td>28</td>
            <td>9.99</td>
            <td>20.3%</td>
            <td>+3</td>
        </tr>
        <tr>
            <td>john</td>
            <td>hood</td>
            <td>33</td>
            <td>19.99</td>
            <td>25.1%</td>
            <td>-7</td>
        </tr>
        <tr>
            <td>clark</td>
            <td>kent</td>
            <td>18</td>
            <td>15.89</td>
            <td>44.2%</td>
            <td>-15</td>
        </tr>
        <tr>
            <td>bruce</td>
            <td>almighty</td>
            <td>45</td>
            <td>153.19</td>
            <td>44%</td>
            <td>+19</td>
        </tr>
        <tr>
            <td>bruce</td>
            <td>evans</td>
            <td>56</td>
            <td>153.19</td>
            <td>23%</td>
            <td>+9</td>
        </tr>
    </tbody>
</table>
<br>
Firstname is:
<input type="text" id="firstname" />
<br>Lastname is:
<input type="text" id="lastname" />
<br>Age is:
<input type="text" id="age" />
<br>Total is:
<input type="text" id="total" />
<br>Discount is:
<input type="text" id="discount" />
<br>Diff is:
<input type="text" id="diff" />

<br>
<input type="button" value="testme" onclick="test()">
</body>


</html>

Answer 1

您可以编写另一个函数来填充必要的字段。例如：

function populateFields(row) {
    el('firstname').value = row.cells[0].innerHTML;
    el('lastname').value = row.cells[1].innerHTML;
    el('age').value = row.cells[2].innerHTML;
    el('total').value = row.cells[3].innerHTML;
    el('discount').value = row.cells[4].innerHTML;
    el('diff').value = row.cells[5].innerHTML;
}
// el() is shortcut for document.getElementById

将相应的行传递给函数以从中获取数据的位置。

http://jsfiddle.net/dfsq/HDu8n/

根据表中单击/滚动的行填充输入框

1 个答案: