Three ways to use the javascript confirmation box_Basic knowledge

The first method: It is very easy to use. Only after confirmation can the download address page be opened. The principle is also relatively clear. Mainly used to confirm deletion of a single message.

Copy code The code is as follows:

<SCRIPT LANGUAGE=javascript>
function del () {
var msg = "Are you really sure you want to delete it? nnPlease confirm!";
if (confirm(msg)==true){
return true;
}else{
return false;
}
}
</SCRIPT>

Calling method:

Copy code The code is as follows:

<a href=" del.php?id=123" onclick="javascript:return del()">Delete</a>

Second method: The principle is the same as above. JavaScript delete confirmation box

Copy code The code is as follows:

<a href="javascript: if(confirm('Are you sure you want to delete?'))location='jb51.php?id='">Delete</a>

The third type: confirmation prompt mainly used for batch deletion

Copy code The code is as follows:

<input name="Submit" type="submit" class="inputedit" value="Delete"
onclick="{if(confirm('Are you sure about the record?')){
this .document.formname.submit();
return true;}return false;
}">
<input name="Button" type="button" ID="ok" onclick=" {if(confirm('Are you sure to delete?')){
window.location='Action.asp?Action=Del&
TableName=Item&
ID=<%=ID%>';
return true;
}return false;}" value="Delete column" />