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编辑您的代码：
<!DOCTYPE HTML> <html> <head> <script type="text/javascript"> function resCalc() { numA= _proxy_jslib_handle( _proxy_jslib_handle(document, 'getElementById', void 0, 1, 0)("num_a"), 'value', void 0, 0, 0); numB= _proxy_jslib_handle( _proxy_jslib_handle(document, 'getElementById', void 0, 1, 0)("num_b"), 'value', void 0, 0, 0); _proxy_jslib_assign('', _proxy_jslib_handle(document, 'getElementById', void 0, 1, 0)("result"), 'value', '=', (Number(numA)+Number(numB))); } ; _proxy_jslib_flush_write_buffers() ;</script> </head> <body> <p>使用 output 元素的简易计算器：</p> <form onsubmit="return ((_proxy_jslib_ret= (false)), _proxy_jslib_flush_write_buffers(), _proxy_jslib_ret)"> <input id="num_a" /> + <input id="num_b" /> = <output onforminput="resCalc() ; _proxy_jslib_flush_write_buffers() ;" id="result"></output> </form> </div> </body> </html>
查看结果: