全选复选框 [英] Select All Checkbox

问题描述

我有一个网页以表格/形式返回搜索结果。我想有一个全选复选框，将选择所有的搜索结果复选框。显示结果的代码如下：

I have a webpage that returns search results in a table/form. I would like to have a select all checkbox, that would select all the checkboxes for the search results. My code for the display results is below:

<form action="noJavaScript.php" name="theForm" method="post">
<table style="border: 1px solid black" RULES=ALL FRAME=VSIDES>
<th> </th><th>Order #</th><th>Inspector</th><th>Reference #</th><th>Client Name</th><th>Property Address</th><th>City</th><th>State</th><th>Zip</th><th>Inspection Date</th>
        <?php
            while ($row = mysql_fetch_assoc($result))
            {
                echo '<tr><td>';
                echo '<input type="checkbox" name="selected[]" value="'.$row['order_number'].'"/>';
                echo '</td>';
                foreach ($row as $key => $value)
                    echo '<td>'.htmlspecialchars($value).'</td>';
                echo '</tr>';
            }
        ?>

    </table>
<input type="submit" name="submit" value="Edit/Modify Order" onClick="document.theForm.action='modify.php'">
<input type="submit" name="submit" value="Clone Order" onClick="document.theForm.action='clone.php'">
<input type="submit" name="submit" value="Delete Order" onClick="document.theForm.action='deleteorder.php'">
<input type="submit" name="submit" value="Archive Order" onClick="document.theForm.action='archive.php'">

</form>

我已尝试使用以下函数：

I have tried using the following function:

<script type="text/javascript"
<!--
function SetAllCheckBoxes(FormName, FieldName, CheckValue)
{
    if(!document.forms[FormName])
        return;
    var objCheckBoxes = document.forms[FormName].elements[FieldName];
    if(!objCheckBoxes)
        return;
    var countCheckBoxes = objCheckBoxes.length;
    if(!countCheckBoxes)
        objCheckBoxes.checked = CheckValue;
    else
        // set the check value for all check boxes
        for(var i = 0; i < countCheckBoxes; i++)
            objCheckBoxes[i].checked = CheckValue;
}
// -->
</script>

这样的按钮：

        <input type="button" onclick="SetAllCheckBoxes('theForm', 'myCheckbox', true);" value="Check All">;

但我不能让它工作。

推荐答案

var form = document.getElementsById('form_id');
var checkBoxes = form.getElementsByTagName('input');
for (var i in checkBoxes)
{
   if (checkBoxes[i].type=="checkbox")
      checkBoxes[i].checked = true; 
}

这篇关于全选复选框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！