html限制输入框只能输入数字

<div class="col-sm-8">
								<#form:input path="quantity" maxlength="10" class="form-control required" onblur="value=zhzs(this.value)"/>
							</div>





//限制数量只能输入数字
function zhzs(value) {
   value = value.replace(/[^\d]/g, '').replace(/^0{1,}/g, '');
   if (value != ''){
      value = parseFloat(value).toFixed(0);
   }
   else{
      //value = parseFloat(0).toFixed(0);
      value=null;
   }
   return value;
}