梦之都
JavaScript教程
eval
函数，执行字符串形式的JavaScript表达式或语句，并返回结果(如果有)
<!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 eval() 函数示例</title> </head> <body> <script type="text/javascript"> document.write(eval()); document.write("<br />"); document.write(eval("6+8")); document.write("<br />"); document.write(eval("6+8;7+9")); document.write("<br />"); document.write(eval("var a=1")); </script> </body> </html>