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etsted
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when i use the setTimeout function why do i have to use quotes around the first parameter when it is a function?

 

<script> function renderTime() {var time = new Date();var h = time.getHours();var m = time.getMinutes();var s = time.getSeconds();var diem = "AM";

if( h == 0){ h = 12;} else if(h > 12){ h = h - 12;diem = "PM";}

if(h < 10){h = "0" + h;}

if(m < 10){m = "0" + m;}

if(s < 10){s = "0" + s;}

var clock = document.getElementById("displayClock");clock.innerText = h + ":" + m + ":" + s + " " + diem;clock.innerText = h + ":" + m + ":" + s + " " + diem;setTimeout(renderTime(),1000); }renderTime();</script>

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If there are no parameters then leave the parens off. If there are parameters then enclose it in an anonymous function.

setTimeout(renderTime,1000);setTimeout(function(){renderTime(1000)},1000);
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because in your example you are calling the function immediately, with the ()'s and thus you are passing the return value of that function to setTimeout. It is preferable to just pass a reference to the function, as in DaveJ's examples.

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