【閃爍背景】語法C50

【語法】

<script> <!-- function initArray() { this.length = initArray.arguments.length for (var i = 0; i < this.length; i++) this[i+1] = initArray.arguments[i] } var hexChars = "0123456789ABCDEF"; function Dec2Hex (Dec) { var a = Dec % 16; var b = (Dec - a)/16; hex = "" + hexChars.charAt(b) + hexChars.charAt(a); return hex; } function bgChanger (begin, end, steps) { steps = steps -1 ; redA = begin.charAt(0) + begin.charAt(1); red_valA = parseInt(redA,'16'); redB = end.charAt(0) + end.charAt(1); red_valB = parseInt(redB,'16'); red_int = ((red_valB - red_valA) / steps) * -1; grnA = begin.charAt(2) + begin.charAt(3); grn_valA = parseInt(grnA,'16'); grnB = end.charAt(2) + end.charAt(3); grn_valB = parseInt(grnB,'16'); grn_int = ((grn_valB - grn_valA) / steps) * -1; bluA = begin.charAt(4) + begin.charAt(5); blu_valA = parseInt(bluA,'16'); bluB = end.charAt(4) + end.charAt(5); blu_valB = parseInt(bluB,'16'); blu_int = ((blu_valB - blu_valA) / steps) * -1; step = 2; red = red_valA; grn = grn_valA; blu = blu_valA; document.bgColor = begin; while ( steps >= step ) { red -= red_int; red_round = Math.round(red); red_hex = Dec2Hex(red); grn -= grn_int; grn_round = Math.round(grn); grn_hex = Dec2Hex(grn); blu -= blu_int; blu_round = Math.round(blu); blu_hex = Dec2Hex(blu); document.bgColor = red_hex + grn_hex + blu_hex; // document.write("<br>bgcolor = " + red_hex + grn_hex + blu_hex); step++; } document.bgColor = end; } --> </script> <script> <!-- bgChanger("FFEAD5","000000",5); bgChanger("000000","FF0000",5); bgChanger("FF0000","000000",5); bgChanger("000000","AA00EE",5); bgChanger("AA00EE","000000",5); bgChanger("000000","0000FF",5); bgChanger("0000FF","000000",5); bgChanger("000000","FFEAD5",5); --> </script>

每加一行→bgChanger("FFEAD5","000000",5);可增加一個變化
第一個色碼為原來顏色
第二個色碼為替換顏色
第三個數字為所需時間