JSP控制输入框只能输入数字并且限制输入小数为两位

  <input id="sale_income" class="form-control" placeholder="默认到小数点后两位" onkeyup="this.value=this.value.replace(/^(\-)*(\d+)\.(\d\d).*$/,'$1$2.$3')"  onafterpaste="this.value=this.value.replace(/\D/g,'')" maxlength="15"  name="sale_income" type="text" >