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<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="utf-8"> <title></title> </head> <body> <form action="#"> <button onclick="return true;">submit</button> <button onclick="return false;">submit</button> </form> </body> </html>
<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="utf-8"> <title></title> </head> <body> <form action="#"> <button onclick="return true;">submit</button> <button onclick="return false;">submit</button> </form> </body> </html>