求助!js无法获取<textarea></textarea>中的值
< ! DOCTYPE html > < html lang = "en" > < head > < meta charset = "UTF-8" > < meta name = "viewport" content = "width=device-width, initial-scale=1.0" > < meta http - equiv = "Content-Type" content = "text/html; charset=UTF-8" / > < title > Get weather information ( GWI ) < / title > < style > #testarea { margin : 0 px ; width : 1541 px ; height : 404 px ; } #submit { height : 12 px ; width : 6 px ; } < / style > < / head > < body > <?php require ( 'functionDefine.php' ) ; $requestKey = array ( array ( //www.heweather.com array ( 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' ,