Question

好的，我正在搞乱代码，以帮助我更好地理解javascript，而且我一直在玩骨干。我可能会错过它，但我的验证在这里工作正常。我要么得到一个＆＃34;你必须填写这两个字段，或者即使字段为空，它也只是提交。

addModel的功能是向我的父视图添加一行并将其全部保存在一个导致我出现问题的函数中

Form = Backbone.View.extend({ //form view
    el: '.item-form',
    initialize: function(){
    }, 
    events: {
        'click #additem': 'addModel' // clicking on the add item button launches the addmodel function
    },
    addModel: function(){ // when the addmodel function fires it takes 
        var item = new Item({
            "itemName": this.$("#item").val(),//value of form input placed into  row template cell
            "price": this.$("#price").val()}); 

    // simple validation before adding to collection
        if(!_.isEmpty("#item") && !_.isEmpty("#price")){
            var items = new Items();
            items.add(item);
            $("#message").html("Please wait; the task is being added.");
            item.save(null, {success:
                //use the mongo id as the Item models id
                function (item, response,options) {
                    item.id= item.attributes._id.$id;
                    item.attributes.id = item.attributes._id.$id;
                    new ItemsView({collection: items});
                    $("#message").html("");
                }
            });
            this.$("#item").val('');//all this does is empty the field
            this.$("#price").val('');//all this does is empty the field
        } else {
           alert('Please fill in both fields');
        }
    }
});

以下是html的参考资料

<body>
<table class="itemTable">
<thead>
<tr>
    <th>Item</th>
    <th>Price</th>
    <th></th>
</tr>
</thead>
<tbody class="tableBody">    
<script type="text/template" id="table-row">
<td><%= itemName %></td> <td><%= price %></td> <td> <button class="complete">Complete</button> <button class="remove">Remove</button></td> 
</script>

</tbody>
</table>

<form class="item-form">
<input type="text" name="item" id="item" placeholder="Item"/> <!-- goes to itemName in the template for the body -->
<input type="text" name="price" id="price" placeholder="Price" /><!--goes to price in the template for the body -->
<button type="button" id="additem">Add</button>
</form>
<div id="message"></div

Answer 1

验证应该比较输入值而不仅仅是id。

if(!_.isEmpty(this.$("#item").val()) && !_.isEmpty(this.$("#price").val())){

Backbone Views中的验证错误

1 个答案: