<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <script type="text/javascript"> a="{\'username\':\'张三\',\'sex\':\'男\'}"; -------------字符串为双引号 obj=eval(\'(\'+a+\')\'); ------------------转换为对象 alert(a); </script> </body> </html>