The front-end can not be as direct as the native app to manipulate local files, otherwise open a Web page will be able to steal the files on the user's computer, so it needs to be triggered by the user, the user can operate in the following three
[HTML] iframe cross-origin access problem, htmliframe cross-OriginOverview
The local browser accesses the local HTML file and the server-side HTML file. The local Iframe does not have an adaptive height, while the server-side ifenders are adaptive
In those years, the pitfalls we step on in Django web development (1) -- the magical '/' and ajax + iframe uploads, djangoiframe1. upload images and display them at the front end
To avoid the overall front-end refreshing, we use ajax + iframe
ASP tutorial. net file picture upload with preview effect
The picture preview consists of two parts: get the image data from the file Form control, and display the preview image according to the data.The File and IMG properties of the program are
How to implement local refresh using IFRAME in . NET MVC Today, someone is experiencing a local refresh problem in MVC, which prevents the entire page from refreshing and dithering. The layout in the Web page is still a table layout, but
650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/4C/30/wKioL1Q4gn6zvVYlAAEoOMNBkb0162.jpg "title=" Upload 3.png "alt=" Wkiol1q4gn6zvvylaaeoomnbkb0162.jpg "/>The traditional upload file function, click "Upload" after the page will be
You can use IFRAME to upload a non-refreshing file. In fact, it is refreshed, but it is hidden in IFRAME.
The target in form must be equal to the ID value in IFRAME, indicating that the form has a post event, that is,
In the daily project, often in the background need to upload pictures and other resource files, before using this component a few times, feel very useful, but every time you use the need to go through a review, so it is better to remember here,
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