为什么我们在angularjs中使用form或ng-submit? [英] Why do we use form or ng-submit in angularjs?

问题描述

我计划有一个angularjs应用程序.我们将使用Web Api服务进行CRUD操作.我可以从ng-click指令中调用这些控制器功能(我的意思是没有提交)

I am planning to have an angularjs application. We will be doing the CRUD operation using Web Api service. And these controller functions I can call from ng-click directive (I mean with out a submit)

AngularJs <-> WebApi <-> Sql Serevr =>这是我们的堆栈.

AngularJs <-> WebApi <-> Sql Serevr => This is our stack.

我们需要致电Web服务器(以获取文件.例如:图片).

We need get call to web server (to fetch files. Ex: images).

但是我想知道，在这种情况下，我们是否需要对Web服务器进行后期操作?

But I am wondering, will we ever need a post operation into webserver in our case?

此外，我们是否需要表单，ng-form，submit，ng-submit?

Also, do we ever need a form,ng-form,submit,ng-submit - in our case?

任何帮助都将得到感谢，谢谢！

Any help would be apprecicated, Thanks!

推荐答案

除了在代码中提交使用<form>标记外，还有很多原因.首先，将验证结果直接连接到表单对象中.如果您没有该表单，则不会获得该功能.

There are number of reasons outside of just submitting to use a <form> tag in your code. For one, angular wires up validation results right into the form object. If you didn't have the form, you wouldn't get that functionality.

我建议您看一下Angular Form文档底部的示例，以了解为什么要使用Form.如果清除示例中的文本框，则可以看到form.$ valid和form.$ error如何更改.

I'd suggest taking a look at the example at the bottom of the Angular Form documentation to see why you may want to use the Form. You can see how the form.$valid and form.$error change if you clear out the textbox in the example.

https://docs.angularjs.org/api/ng/directive/form

关于提交，ngSubmit将阻止通常用于发布服务器的表单的默认操作.与现有的验证属性类似，还有一个form.$submitted属性，当使用ng-submit提交表单时，该属性将更新为true.在ng-click上不会发生这种情况.

Regarding submitting, ngSubmit will prevent the default action of a form which is usually posting the server. Similar to the validation properties that exist, there is also a form.$submitted property that will be updated to true when the form is submitted with an ng-submit. This will not happen on an ng-click.

https://docs.angularjs.org/api/ng/directive/ngSubmit

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