Full version: jsB@nk » Background » Background Color Changer
URL: https://www.javascriptbank.com/background-color-changer-francis.html
Allows for the fine tuning of the window's background color via red, green, and blue color buttons. Click a button to change the color value manually and click Start button to flash background.
Full version: jsB@nk » Background » Background Color Changer
URL: https://www.javascriptbank.com/background-color-changer-francis.html
<SCRIPT language=Javascript> <!--/* This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com*/ var timerID = null var timerRunning = false var pmax=0//set max to the point where user stops. var aColor=['']//use this array if you want to keep a record of the colors hex values. var c=0 var max=0; function init(){ max=parseInt(document.colors.nmb.value)//maximum number of colors to step through if (isNaN(max)){ alert(document.colors.nmb.value+' is not a numerical value')document.colors.nmb.focus()} else startup() } function stopclock(){ if(timerRunning) clearTimeout(timerID); timerRunning = false; } function startclock(){ stopclock(); } function startup(){ /* change the values as need be. i.e. To see mostly blue set the maximum use: bb=255 for low red content in color use: rr=parseInt(Math.random()*70) for no green at all in color use: gg=0These can all be switch about as necessary */ c++ if (c > max) return (true); pmax++ rr=parseInt(Math.random()*255) gg=parseInt(Math.random()*255) bb=parseInt(Math.random()*255) document.colors.rr.value=rr document.colors.gg.value=gg document.colors.bb.value=bb setbgcolor(rr,gg,bb,c) } function setbgcolor(rr,gg,bb,nIndex){ var xcolor='#'+Hexconv(rr)+Hexconv(gg)+Hexconv(bb) aColor[nIndex]=xcolor document.colors.cr.value=xcolor document.bgColor=xcolor timerID=setTimeout("startup()",50) timerRunning = true } function Hexconv(nValue){ var aHex = ['0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'] var n =nValue/16 var n_=nValue%16 n=parseInt(n) n =((n <= 15) ? aHex[n] : Hexconv(n)) n_=((n_ <= 15) ? aHex[n_] : Hexconv(n_)) var nhex=n+n_ return(nhex) } function Dispcolors(){ // this function is only necessary if you use the array to store the hex values. var y=0; if ((pmax/10) >=1){ document.write('<table border=1><tr>') for (var x=1; x<=pmax; x++){ y=y+1 document.write('<td bgColor="'+aColor[x]+'">'+aColor[x]+'</td>'); if (y == 8){ document.write('</tr><tr>'); y=0 } } } else{ for (var x=1; x<=pmax; x++) document.write('<td bgColor="'+aColor[x]+'">'+aColor[x]+'</td>') } document.write('</tr></table>') document.write('<br><br><small><small>Copyright © 1999, by Demetrius Francis</small></small>'); } //--></SCRIPT><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com--><FORM name=colors><CENTER><TABLE width="30%"> <TBODY> <TR> <TD align=right><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 9pt; FONT-WEIGHT: bold; TEXT-ALIGN: left">Loops:</SPAN></TD> <TD align=left><INPUT name=nmb size=7></TD></TR> <TR> <TD align=right><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 9pt; FONT-WEIGHT: bold; TEXT-ALIGN: left">Red:</SPAN></TD> <TD align=left><INPUT name=rr size=7></TD></TR> <TR> <TD align=right><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 9pt; FONT-WEIGHT: bold; TEXT-ALIGN: left">Green:</SPAN></TD> <TD><INPUT name=gg size=7></TD></TR> <TR> <TD align=right><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 9pt; FONT-WEIGHT: bold; TEXT-ALIGN: left">Blue:</SPAN></TD> <TD><INPUT name=bb size=7></TD></TR> <TR> <TD align=right><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 9pt; FONT-WEIGHT: bold; TEXT-ALIGN: left">Color:</SPAN></TD> <TD><INPUT name=cr size=12></TD></TR> <TR> <TD align=right><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 9pt; FONT-WEIGHT: bold; TEXT-ALIGN: left">Choices:</SPAN></TD> <TD><INPUT name=stop onclick=stopclock() type=button value=Stop!> <INPUT name=start onclick=init() type=button value=Start!> <INPUT name=clear type=reset value=Clear!> <INPUT name=list onclick=Dispcolors() type=button value=List!> </TD></TR> <TR> <TD align=left colSpan=2><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 9pt; FONT-WEIGHT: bold; TEXT-ALIGN: left"><BR>1. Enter the number of colors to generate (loops).<BR>2. Click the Start button.<BR>3. Click the List button to see results. </SPAN></TD></TR></TBODY></TABLE></CENTER></FORM><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com-->