javascript中用toString()和parseInt()函數對數位的進制進行轉換！
<! 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>10進制<-->2進制</title> </head> <body> Decimal: <input type="text" id="decimal" /> <input type="button" value="to Binary" onclick="return toBinary();" /> <br /> Binary: <input type="text" id="binary" /> <input type="button" value="to Decimal" onclick="return toDecimal();" /> <script type="text/javascript"> var d = document.getElementById('decimal'); var b = document.getElementById('binary'); function toBinary() { var num = d.value; if (isNaN(num) || !num) { d.value = ""; return false; } b.value = (parseInt(num)).toString(2); } function toDecimal() { var num = b.value; if (isNaN(num) || !num) { b.value = ""; return false; } d.value = parseInt(num, 2); } </script> </body> </html> Start building with 50+ products and up to 12 months usage for Elastic Compute Service
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