";
$ ("#Imagecontainer"). Append (img);
Reader.readasdataurl (selectedfile);
}
So far, you can see the following figure:
Now you need to send the uploaded file to the server, so add the onclick event and call it in the JS UploadFile () method, the code is as follows:
function UploadFile () {//we can create form by passing the form to constructor of FormData object//or G
1. PrefaceCSRF (Cross-site request forgery) cross-site solicitation forgery, the ASP. NET MVC application improves the user experience by using AJAX requests, browser developer tools can be at a glance at the mountains small, it is easy to forge a request to attack the application, thereby leaking core data, Cause security issues. Microsoft's own antiforgerytoken can be solved, and the syntax is simple (the
The following content is translated from: https://www.tutorialspoint.com/springmvc/springmvc_textarea.htmDescription: The sample is based on spring MVC 4.1.6.The following example shows how to use textarea in a form that uses the Spring WEB MVC framework. First, let's use the Eclipse IDE and follow these steps to develop a dynamic
1.MVC comes with Ajax applications,Steps to use:The first step is to introduce JS framework src= ".. /.. /scripts/jquery-1.4.4.js " type=" Text/javascript ">script > src= ".. /.. /scripts/jquery.unobtrusive-ajax.js " type=" Text/javascript"> Script >The second step is to call the Ajax method in MVCSub-situationA. If the
In the ASP. NET MVC framework, the data in the view is passed to the controller, which is implemented primarily by sending forms. In use, the following three methods are used mainly.1. Read form data by Request.Form 2, read form data by FormCollection 3, directly read form data objectHere's a summary of what I learned
ViewBagPostregister is also a line to complete the background verificationView1. Quote JS and write the initialization function.2, put @html.raw (Viewbag.validationbind) on the bottom of the page@{viewbag.title = "Register"; Layout = null;} CompleteForm Ugly point, full-featured, based on the validate.js CSS support is good can. Self-beautificationII. Ajax notationchange the submit to a button, and the rest will be the same. A little bit more codeDem
Series Catalog
Note: This section of reading needs to have the basis of MVC custom validation, otherwise it is more laborious
All along, the verification of the form is indispensable, Microsoft's things still do more humane, from WebForm to MVC, have done a two-way authentication
Using JS alone to achieve the front-end verification is extremely unsafe, so this t
Ajax mvc server returns Json data, the client obtains Json data, mvcjson
Controller
Using System; using System. collections. generic; using System. linq; using System. web; using System. web. mvc; using System. web. script. serialization; namespace MvcApplication2.Controllers {public class HomeController: Controller {public ActionResult Index () {return View ()
Use Ajax to update the report object method in ASP. Net MVC project.
Ajax significantly accelerates Web applications. In addition, the visual effects are improved. Everyone agrees that it is unfriendly to refresh the whole page every time you click the button. If your network speed is not very fast, this process will be annoying, because all elements will disappe
I've been using spring MVC lately, and it's not very easy to redirect forward and commit, just sort it out.
Spring MVC finally return a string, typically a page path below webcontent, such as:
return "/web-inf/view/login.jsp";
The above sentence means that after a request is processed, the login.jsp page is displayed and the page is rendered with data from a bunch of objects, such as request, to populate
must be less than 5")]. Then, with jquery validate, the client checks before each commit, and if there are non-conforming rules in the checksum match, the message is displayed in a specific span label (class= "Field-validation-valid"). and prevent this form from submitting operations. 1.3 precautions for using dataannotations (1) First, make sure that the page that needs to be validated introduces several JS files: of course, the JS file of the jque
allows the server to generate the script tags return value client and implement site access in the form of javascript callback. JSONP is a script tag injection. Adding the response returned by the server to the page is a specific function.
In short, JSONP itself is not a complex thing, that is, the dynamic parsing of javascript documents through the scirpt tag bypasses the browser's same-source policy.JSONP Principle and Implementation
Next, we will
[@ name = items] '). get (1). checked = true;
40. Get value:
41. text box, text area: $ ("# txt"). attr ("value ");
42. Multiple choice box checkbox: $ ("# checkbox_id"). attr ("value ");
43. radio Group radio: $ ("input [@ type = radio] [@ checked]"). val ();
44. select: $ ('# sel'). val ();
45. Control form elements:
46. text box, text area: $ ("# txt"). attr ("value", ''); // clear the content
47. $ ("# txt"). attr ("value", '11'); // fill in the
Transferred from: http://www.cnblogs.com/zyqgold/archive/2010/11/22/1884779.htmlIn the ASP. NET MVC framework, the data in the view is passed to the controller, which is implemented primarily by sending forms. In use, the following three methods are used mainly.1. Read form data by Request.Form 2, read form data by FormCollection 3, directly read
In the ASP. NET MVC framework, the data in the view is passed to the controller, which is implemented primarily by sending forms. In use, the following three methods are used mainly.1. Read form data by Request.Form 2, read form data by FormCollection 3, directly read form data objectHere's a summary of what I learned
Come in and talk about Ajax, layer three, and MVC.
I write a small project myself, originally with three layers (interface layer, business logic layer, data layer).
Ajax applications were later added in large numbers.
There are a lot of drawbacks to discovering that layer three is used in projects with Ajax.
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