Tip: you can modify some code before running
Js background constantly changing code-QQ space code<SCRIPT LANGUAGE="JavaScript">IE = (document. all );<!--判断是否是IE浏览器-->If (IE) {var chidc = new Array ();<!--各个表格的背景色-->Var hexc = new Array ('0', '1', '2', '3', '4', '5', '6', '7 ', '8', '9', 'A', 'B', 'C', 'D', 'e', 'F ');<!--用于十－十六进制的转换-->Var chidn = new Array (100,70, 40 );<!--初始化-->Var step = new Array (10, 10, 10 );<!--变化步长-->Var chway = new Array (step [0], step [1], step [2]);<!--变化步长-->Var tone = new Array (1, 1 );<!--平衡变量-->Function chcol () {for (I = 0; I <3; I ++) {chidn [I] + = chway [I];<!--三个表格分别按照设定的步长增长，最大值不能超过255-->If (chidn [I]> = 255) {chidn [I] = 255; chway [I] =-step [I];<!--如果超过了，则改为同样步长的递减-->} Else if (chidn [I] <= 40 ){<!--最小值不能低于40-->Chidn [I] = 40; chway [I] = step [I]; tone [I]> = 3? Tone [I] = 1: tone [I] ++;<!--tone数组中的值不超过3-->} Col1 = hexc [Math. floor (chidn [I]/16)];<!--转换为十六进制表示-->Col2 = hexc [chidn [I] % 16]; tored = ''; toblue =''; for (j = 1; j<tone[i]; j++) tored+='00'; <!--分别对红色分量和蓝色分量进行处理以实现渐变效果-->For (j = 3; j> tone [I]; j --) toblue + = '00'; chidc [I] = '#' + tored + col1 + col2 + toblue;<!--将值赋给chidc-->Td = eval ('document. all. Chcol' + I); td. style. backgroundColor = chidc [I];<!--设定第i个表格的背景色-->} SetTimeout ('chcol () ', 100 );<!--延时0.1s-->}}</script><table cellspacing=2 cellpadding=0 bgcolor=#999999 width=400><tr><td width=33% align=center id=chcol0 name=id=chcol0><font color=white>JavaScript Forum</td><td width=33% align=center id=chcol1 name=id=chcol0><font color=white>JavaScript special effects</td><td width=33% align=center id=chcol2 name=id=chcol0><font color=white>JavaScript learning</td></tr></table><SCRIPT LANGUAGE="JavaScript">Chcol ();<!--调用chcol函数--></script><!--本例实现了渐变色表格的功能--><!--重点在于颜色的配置，本例是通过chcol函数中的for循环来实现的--><!--定义了多个变量来表示颜色的变化步长、绝对值等--><!--每种颜色显示0.1秒-->
Tip: you can modify some code before running
