JavaScript Reference/Event Handlers Reference/onBeforeUpdate
Содержание
"onBeforeUpdate" Example
<html>
<head>
<title>Recordset Events</title>
<script for="firstname" event="onbeforeupdate">
alert("Data is about to change");
</script>
</head>
<body>
<object classid="clsid:333C7BC4-460F-11D0-BC04-0080C7055A83" id="myData">
<param name="DataURL" value="myfile.csv">
<param name="UseHeader" value="True">
<param name="TextQualifier" value=""">
</object>
<table>
<tr>
<td>First Name</td>
<td><input id=firstname type=text datasrc=#myData datafld=firstname></td>
</tr>
<tr>
<td>Last Name</td>
<td><input id=lastname type=text datasrc=#myData datafld=lastname></td>
</tr>
</table>
<table id=myTable datasrc=#myData>
<thead>
<tr style="font-weight:bold">
<td>First</td>
<td>Last</td>
</tr>
</thead>
<tbody>
<tr id="tableList">
<td><span datafld="firstname"></span></td>
<td><span datafld="lastname"></span></td>
</tr>
</tbody>
</table>
</body>
</html>
<!-- myfile.csv -->
<!--
firstname:string,lastname:string
Joe,Yin
Jason,Lee
Tony,Zhang
-->
"onBeforeUpdate" is applied to
+----------------+--------------------------------------------------------------+
| Applied_To |<a> <applet> |
| |<bdo> <button> |
| |<caption> <custom> |
| |<div> <frame> |
| |<frameset> <iframe> |
| |<img> <input type="checkbox"> |
| |<input type="hidden"> <inputtype="password"> |
| |<input type="radio"> <input type="text"> |
| |<label> <legend> |
| |<map> <marquee> |
| |<object> <rt> |
| |<ruby> <select> |
| |<span> <table> |
| |<td> <textarea> |
| |<tr> |
+----------------+--------------------------------------------------------------+
"onBeforeUpdate" Properties
+----------------+--------------------------------------------------------------+
| Properties |altKey altLeft |
| |cancelBubble clientX |
| |clientY ctrlLeft |
| |offsetX offsetY |
| |returnValue screenX |
| |screenY shiftLeft |
| |srcElement type |
| |x y |
+----------------+--------------------------------------------------------------+
"onBeforeUpdate" Syntax and Note
Note:
This event fires before a databound object is updated.
The datasrc and datafld attributes must be set to the
onBeforeUpdate event handler elements.
The value of the datasrc attribute must reference an object in the page.