JavaScript Reference/Javascript Properties/defaultSelected
Содержание
"defaultSelected" Example
<source lang="javascript">
<html> <body> <form id="myF"><select name="select">
<option value="1">Item 1</option> <option value="2">Item 2</option> <option id="option3" value="3">Default selected Option</option>
<script language="JavaScript">
document.getElementById("option3").defaultSelected = true; var n = document.getElementById("option3").innerText; function function1() { alert("Default selected Option label:\n"+"""+n+"""); document.getElementById("myF").reset(); }
</script>
<option value="4">Item 4</option> <option value="5">Item 5</option>
</select> </form> <input type="button" value="Click here" onclick="function1();"> </body> </html>
</source>
"defaultSelected" is applied to
<source lang="javascript">
+----------------+--------------------------------------------------------------+ | Applied_To |<option> | +----------------+--------------------------------------------------------------+
</source>
"defaultSelected" Possible Values
<source lang="javascript">
Possible Values true false.
</source>
"defaultSelected" Syntax and Note
<source lang="javascript">
Note: Read and write property. Sets the element selected state when the page is loaded.
Syntax:
document.getElementById("optionID").defaultSelected = value document.all.optionID.defaultSelected = value // IE only
</source>