打印空心正方形的javascript代码
打印空心正方形的javascript代码
[解决办法]
- HTML code
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head> <title>new document</title></head><body style="background:#eee"> <script type="text/javascript"> (function(){ document.write("<div style='width:200px; height:200px; border:1px solid #ff0000'></div>"); })(); </script></body></html>
[解决办法]
- HTML code
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head> <title>new document</title> <style type="text/css"> *{ line-height:8px; } </style></head><body> <script type="text/javascript"> (function(){ var x = prompt("请输入正方形边长:", 10); x = parseInt(x, 10); if(isNaN(x) || x < 1 || x > 1000){ alert("输入错误!"); return; } var line = new Array(x + 1).join("*"); document.writeln(line + "<br/>"); for(var i = 0; i < x - 2; i++){ document.writeln("*" + new Array(x - 1).join(" ") + "*<br/>"); } document.writeln(line + "<br/>"); })(); </script></body></html>