Mega Code Archive
Using a Timer
<![CDATA[
/*
Learn How to Program Using Any Web Browser
by Harold Davis
Apress CopyRight 2004
ISBN: 1590591135
*/
<HTML>
<HEAD>
<TITLE>As time goes by...</TITLE>
<SCRIPT>
var timerID;
var x;
function Thing (name) {
this.name = name;
}
function fireIt () {
var now = new Date();
var displayStr = window.document.theForm.txtFired.value;
displayStr += "Hello: " + x.name + " " + now + "\r\n";
window.document.theForm.txtFired.value = displayStr;
}
function startIt (name) {
x = new Thing (name);
timerID = setInterval("fireIt()", 1000);
}
function stopIt() {
clearInterval(timerID);
}
</SCRIPT>
</HEAD>
<BODY>
<TABLE>
<FORM name="theForm">
<TR>
<TD>Name your object:</TD>
<TD>
<input type=text
name="txtName">
</TD>
</TR>
<TR>
<TD>
</TD>
<TD>
<input type=button value="Start!"
onClick="startIt (txtName.value);">
</TD>
<TD>
<input type=button value="Stop!"
onClick="stopIt();">
</TD>
</TR>
<TR>
<TD>
</TD>
<TD>
</TD>
</TR>
<TR>
<TD colspan=2>
<textarea name="txtFired" cols = 60
rows=20>
</textarea>
</TD>
</TR>
</FORM>
</TABLE>
</BODY>
</HTML>
]]>