梦之都
JavaScript教程
parseFloat
函数，把字符串解析为数字
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>JavaScript parseFloat() 函数示例</title> </head> <body> <script type="text/javascript"> document.write(parseFloat("123456.789")); document.write("<br />"); document.write(parseFloat("12dream3456.789")); document.write("<br />"); document.write(parseFloat("dream123456.789")); </script> </body> </html>