日期:2014-05-16 浏览次数:20351 次
<input id="txt_tname" name="" type="text" value="" /> <input id="btn_submit" name="" type="button" />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <script type="text/javascript"> var ar = []; window.onload = function() { document.getElementById('btn_submit').onclick = function() { var v = document.getElementById('btn_tname').value; if (v.length > 0) { var FLAG = false; for (var i in ar) { if (ar[i].key == v) { FLAG = true; alert(ar[i].val); break; } } if (!FLAG) ar.push({key: v, val: Math.random()}); } } } </script> </head> <body> <input id="btn_tname" name="" type="text" value="" /> <input id="btn_submit" name="" type="button" value="添加到数组" /> </body> </html>
------解决方案--------------------
Math.round(Math.random() * 7)