📄 14-41.htm

📁 JavaScript学习的网页教程。内容简单易懂

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<HTML>
<HEAD>
<TITLE>ScrollBy Controller</TITLE>
<SCRIPT LANGUAGE="JavaScript1.2">
function page(direction) {
	var deltaY =30 
	if (direction == "up") {
		deltaY = -deltaY
	}
	parent.display.scrollBy(0,deltaY)
}
function customScroll(form) {
	parent.display.scrollBy(parseInt(form.x.value), parseInt(form.y.value))
}
</SCRIPT>
</HEAD>
<BODY>
<B>ScrollBy Controller</B>
<FORM NAME="custom">
Enter an Horizontal increment
<INPUT TYPE="text" NAME="x" VALUE="0" SIZE=4">
and Vertical
<INPUT TYPE="text" NAME="y" VALUE="0" SIZE=4">
value.<BR>Then
<INPUT TYPE="button" VALUE="click to scrollBy()" onClick="customScroll(this.form)">
<HR>
<INPUT TYPE="button" VALUE="PageDown" onClick="page('down')">
<INPUT TYPE="button" VALUE="PageUp" onClick="page('up')">
</FORM>
</BODY>
</HTML>

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