Javascript 放置名称[]时复选框的JS验证不起作用

Javascript 放置名称[]时复选框的JS验证不起作用,javascript,validation,Javascript,Validation,我有一个JS验证复选框 function ActionCcdCheck (theForm) { if (theForm.ccd_chk.checked) { theForm.ccd_pos[0].className = 'part'; theForm.ccd_pos[1].className = 'part'; theForm.ccd_pos[2].className = 'part'; theForm.ccd_p

我有一个JS验证复选框

function ActionCcdCheck (theForm)
{
    if (theForm.ccd_chk.checked)
    {
        theForm.ccd_pos[0].className = 'part';
        theForm.ccd_pos[1].className = 'part';
        theForm.ccd_pos[2].className = 'part';

        theForm.ccd_pos[0].disabled  = false;
        theForm.ccd_pos[0].checked  = false;
        theForm.ccd_pos[1].disabled  = false;
        theForm.ccd_pos[1].checked  = false;
        theForm.ccd_pos[2].disabled  = false;
        theForm.ccd_pos[2].checked  = false;
    }
    else
    {
        theForm.ccd_pos[0].disabled  = true;
        theForm.ccd_pos[1].disabled  = true;
        theForm.ccd_pos[2].disabled  = true;
    }
}
复选框

<td colspan="1" rowspan="2" width="35">CCD</td>
<td>Check</td>
<td><input type="checkbox" name="ccd_chk" value="yes" class="part" onclick="ActionCcdCheck (this.form);" onkeypress="FocusChange (this.form, 5, 4);"/> Yes</td>
<tr>
<td>Position</td>
<td>
<input type="checkbox" name="ccd_pos[]" value="front" class="part" onkeypress="FocusChange (this.form, 6, 3);"/> Front
<input type="checkbox" name="ccd_pos[]" value="back" class="part" onkeypress="FocusChange (this.form, 7, 2);"/> Back
<input type="checkbox" name="ccd_pos[]" value="fb" class="part" onkeypress="FocusChange (this.form, 8, 1);"/> FB
</td>

<tr>
CCD
检查
对
位置
正面
返回
食品饮料
现在,当我将复选框名称设置为name=“ccd_pos[]”时,我面临着一个问题。JS验证不起作用。我之所以使用它,是因为我想提交多个值的复选框

function ActionCcdCheck (theForm)
{
    if (theForm.ccd_chk.checked)
    {
        theForm.ccd_pos[0].className = 'part';
        theForm.ccd_pos[1].className = 'part';
        theForm.ccd_pos[2].className = 'part';

        theForm.ccd_pos[0].disabled  = false;
        theForm.ccd_pos[0].checked  = false;
        theForm.ccd_pos[1].disabled  = false;
        theForm.ccd_pos[1].checked  = false;
        theForm.ccd_pos[2].disabled  = false;
        theForm.ccd_pos[2].checked  = false;
    }
    else
    {
        theForm.ccd_pos[0].disabled  = true;
        theForm.ccd_pos[1].disabled  = true;
        theForm.ccd_pos[2].disabled  = true;
    }
}
谁能给我一个建议?谢谢。

在您的代码中:

theForm.ccd_pos[0]
正在查找表单的
ccd\u pos
属性,但没有。您需要的是:

theForm['ccd_pos[]'][0]
var box, boxes = theForm.['ccd_pos[]'];

for (var i=0, iLen=boxes.length; i<iLen; i++) {
  box = boxes[i];

  if (theForm.ccd_chk.checked) {
    box.className = 'part';
    box.disabled  = false;
    box.checked   = false;
  } else {
    box.disabled  = true;
    // and probably
    box.className = '';
  }
}
由于具有相同名称的表单控件将作为集合返回,因此:

theForm['ccd_pos[]']
返回三个控件中的一个,其名称为
ccd\u pos[]
。然后使用普通索引名访问集合的各个成员

请注意,在javascript中,只能在名称符合的规则的情况下使用。否则,必须使用方括号(正式)表示法

因此,您的代码可以是:

theForm['ccd_pos[]'][0]
var box, boxes = theForm.['ccd_pos[]'];

for (var i=0, iLen=boxes.length; i<iLen; i++) {
  box = boxes[i];

  if (theForm.ccd_chk.checked) {
    box.className = 'part';
    box.disabled  = false;
    box.checked   = false;
  } else {
    box.disabled  = true;
    // and probably
    box.className = '';
  }
}
var-box,box=theForm.[ccd_pos[]];

对于(var i=0,iLen=box.length;iYou可能最好遍历表单中的checkbox元素,而不是查看第n个元素。例如jquery$(输入:checkbox)。each(函数(){//blah;});请注意@Duniyadnd的示例代码在选择器周围缺少引号;它应该是
$('input:checkbox')…
非常酷。谢谢,现在我的代码运行良好。:)干杯@RobG