| 3. 3. 1. for...in |
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The for...in loop accesses to all the enumerated properties of a JavaScript object. |
The statement(s) in the loop are executed for each property of an object until every property has been accessed. |
Any parts of an object that are not enumerated are not accessed by this looping structure. |
The format of the for...in loop looks like the following: |
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for (variable in object) {
statement;
}
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<HTML>
<FORM NAME="aForm">
<INPUT TYPE="button" NAME="Big_Button" VALUE="Big Button" onClick="alert('The Big Button was pressed!')";>
</FORM>
<SCRIPT LANGUAGE='JavaScript'>
<!--
var aProperty;
for (aProperty in document.aForm.Big_Button) {
document.write(aProperty,"<BR>");
}
//-->
</SCRIPT>
</HTML>
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