while乘法表 - 爱码网

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>while</title>
	</head>
	<body>
		<script type="text/javascript">
			document.write('<h1>奇数列变为红色</h1>')
			var a = 1;
			document.write('<table border="3"border-color: cadetblue; font-size: 25px;"')
			while (a < 10){
				console.log(a);
				document.write('</tr>')
				var b = 1;
				while (b < 10){
					if(b % 2 != 0){
						document.write('<td style="background-color: red;">' + a + '*' + b + '=' + a * b + '</td>')
					}else{
						document.write('<td>' + a + '*' + b + '=' + a * b + '</td>');
					}
					b ++;
				}
				document.write('</tr>')
				a ++;
			}
			document.write('</table>')




            document.write('<h1>奇数行变为红色</h1>')
			var a = 1;
			document.write('<table border="3">')
			while (a < 10){
				document.write('<tr>')
				var b = 1;
				while( b < 10 ){
					if(a % 2 != 0 ){
						document.write('<td style="background-color: red;">' + b + '*' + a + '=' + a * b + '</td>')
					}else{
						document.write('<td>' + b + '*' + a + '=' + a * b + '</td>');
					}
					b ++;
				}
				document.write('</tr>')	
				a ++;
			}
			document.write('</table>')
			
			
			
			
			
			 document.write('<h1>奇数行奇数列变为红色</h1>')
			var a = 1;
			document.write('<table border="3">')
			while (a < 10){
				document.write('<tr>')
				var b = 1;
				while( b < 10 ){
					if(a % 2 != 0 && b % 2 == 1 || a % 2 == 0 && b % 2 == 0){
						document.write('<td style="background-color: red;">' + b + '*' + a + '=' + a * b + '</td>')
					}else{
						document.write('<td>' + b + '*' + a + '=' + a * b + '</td>');
					}
					b ++;
				}
				document.write('</tr>')	
				a ++;
			}
			document.write('</table>')
			
			
			
			document.write('<h1>81右下</h1>')
			var a = 1;
			document.write('<table style=" color: darkslateblue;">')
			while (a < 10){
				document.write('<tr>')
				var b = 1;
				while( b < 10 ){
					if(b <= a){
						document.write('<td style="text-indent: 20px;">' + b + '*' + a + '=' + a * b + '</td>')
					}
					b ++;
				}
				document.write('</tr>')	
				a ++;
			}
			document.write('</table>')
			
			
			
			document.write('<h1>81左下</h1>')
			var a = 1;
			document.write('<table  style=" color: darkslateblue;">')
			while (a < 10){
				document.write('<tr>')
				var b = 1;
				while( b < 10 ){
					if(a <= b){
						document.write('<td style="text-indent: 20px;">' + b + '*' + a + '=' + a * b + '</td>')
					}
					b ++;
				}
				document.write('</tr>')	
				a ++;
			}
			document.write('</table>')
			
			
			
			document.write('<h1>81右上</h1>')
			var a = 9;
			document.write('<table  style=" color: darkslateblue;">')
			while (a >= 0){
				document.write('<tr>')
				var b = 1;
				while( b < 10){
					if(b <= a){
						document.write('<td style="text-indent: 20px;">' + b + '*' + a + '=' + a * b + '</td>')
					}
					b ++;
				}
				document.write('</tr>')	
				a --;
			}
			document.write('</table>')
		</script>
	</body>
</html>
while乘法表