html - JavaScript Clock -

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i ran snag in code, code below javascript clock works perfectly:

function rendertime() {     var currenttime = new date();     var diem = "am";     var h = currenttime.gethours();     var m = currenttime.getminutes();     var s = currenttime.getseconds();      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 myclock = document.getelementbyid('clockdisplay');     myclock.textcontent = h + ":" + m + ":" + s + " " + diem;     myclock.innerhtml = h + ":" + m + ":" + s + " " + diem;     myclock.innertext = h + ":" + m + ":" + s + " " + diem;     settimeout('rendertime()',1000);  } rendertime();

however trying different this:

function maketime() {     var currenttime = new date();     var diem = "am";     var h = currenttime.gethours();     var m = currenttime.getminutes();     var s = currenttime.getseconds();      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('clock');     clock.innerhtml = "<h1>"+h+":"+m+":"+s+":"+diem+"</h1>";     myclock.textcontent = "<h1>"+h+":"+m+":"+s+":"+diem+"</h1>";     myclock.innertext = "<h1>"+h+":"+m+":"+s+":"+diem+"</h1>";     settimeout('maketime()',1000); } maketime();

this 1 works, not update other one, have manually refresh page.

what doing wrong?

you continue refer myclock in second version, when you've renamed variable clock:

var clock = ... clock.innerhtml = ... myclock.textcontent = "<h1>"+h+":"+m+":"+s+":"+diem+"</h1>"; myclock.innertext = "<h1>"+h+":"+m+":"+s+":"+diem+"</h1>"; settimeout('maketime()',1000);

this causing errors (reference error: myclock not defined) preventing flow of execution reaching settimeout call.

you should learn use tools available you. every browser has method of reporting javascript errors developers. open developer console in webkit/ie10, or firebug in firefox, you'll see these errors , they're happening in code.


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