PHP develops simple voting system administrator function module (3)
As shown in the picture, there are three options in the click button here: select all, cancel all and delete selected.
Click these buttons to select all items, deselect all items, and delete all selected voting items
First set the name attribute of the <form> form
<form id="frm" name="frm" method="post" action="" style="margin-bottom:3px;"></form>
In The name attribute is also used in <input>.
<input type="checkbox" name="itm"/>
And give each of the following 3 button buttons an onclick event
<input type="button" value="選擇全部" onclick="selectAll()" /> <input type="button" value="取消全部" onclick="cancelAll()" /> <input type="button" value="刪除所選" onclick="del()" />
Use javascript to implement the function module of all click events, A for loop is used here to mark the selection.
Click "Select All" to make all checkboxes checked=true, click "Cancel All" to make all checkboxes checked=false unchecked.
If the check box is not selected, it means that the content ID is not selected. Click "Delete Selected" and the content will not be deleted and a prompt message will be displayed.
You can select a single ID to delete, or you can select all to delete.
<script language="javascript">
function selectAll() //選中所有
{
node=window.document.frm.itm;
for(i=0;i<node.length;i++)
{
node[i].checked=true;
}
}
function cancelAll() //取消選中所有
{
node=frm.itm;
for(i=0;i<node.length;i++)
{
node[i].checked=false;
}
}
function del() //刪除選中的所有
{
node=frm.itm;
id="";
for(i=0;i<node.length;i++)
{
if(node[i].checked)
{
if(id=="")
{
id=node[i].value
}
else
{
id=id+","+node[i].value
}
}
}
if(id=="")
{
alert("您沒(méi)有選擇刪除項(xiàng)");
}
else
{
location.href="?type=del&id="+id
}
}
</script>
