angular2+onsenui--监听input框输入，input的值不为空时，提交按钮激活

XXX.htmlcss <div class="content"> <div class="r-input clearfix"> <input type="text" id="name" [(ngModel)]="name" maxlength="13" placeholder="请输入新手机号" (keypress)='onPhonepress($event)' /> </div> <

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