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There are two ways to implement web online editor: one is based on iframe, the other is based on contenteditable. Setting the contenteditable attribute for the element allows editability within the element's area. <div class="textareaByDiv" contenteditable></div> Set the css property of the editable area, which is written in le ...

The main functions of serialization are: 1: Permanently save the object, save the byte sequence of the object to the local file; 2: Transfer objects through serialized objects in the network; 3: Transfer objects between processes through serialization. 2. There are two kinds of serialization in Android: Serializable and arcelable. 1: Seria ...

Follow the recipe shown below and walk through the source code.Put together Priority Queue to summon the Dragon.Ler's go go go! structure /** * Priority queue represented as a balanced binary heap: the two * children of queue[n] are queue[2*n+1] and queue[2*(n+1)]. The * priority queue is ordered by comparator, or by the elements' * natur ...

Introduction to J2SE (III) String, String Buffer, String Builder String can be said to be the most frequently used class in Java, and also the knowledge points that are often asked in interviews. I. Use of String 1. String's immutability /** * The {@code String} class represents character strings. All * string literals in Java programs, such ...

Picture upload is needed in recent projects, but at present, photos taken or scanned will be very large. When uploaded directly to the server, there will be too many pictures. Files will affect the upload speed, and if the resolution of the picture is too large, it is also a problem to view. So I think of using HTML 5 Canvas technology to compr ...

Reprinted from Feng Lele's "Unity Shader Essentials" Getting Depth and Normal Texture Although the code for obtaining depth and normal textures in Unity is very simple, we need to understand the implementation behind them first. Depth texture is actually a rendering texture, but the pixel value stored in it is not a color value but ...

gulp Multiple developers work together to develop a project. Each developer is responsible for different modules. This results in a complete project consisting of many "code sections"; Some pre-processors such as less and sass are used to reduce the maintenance cost of CSS, and these pre-processors need to be parsed eventually. ...

Preface In recent years, the bullet curtain has slowly become popular. We can see the image of the barrage when we watch video or live broadcasting on the internet. Sometimes the content of the barrage is even more wonderful than the content of the video itself. I also like the marble curtain very much. It's common to brush a marble curtain at ...

Oracle official note: javap Decomposition one or more class files. Brief description of use javap [options] classfile... options Command-line options, see Options later in detail classfile One or more Class files (separated by multiple spaces) can use file paths or files under classPath or enter URL s Description The javap command decom ...

View - By using views, you can get other objects that implement the Collection-Map interface.An example of this is the keySet of the mapping class.At first glance, it looks like this method creates a new set, fills in all the keys in the map, and returns to the set.However, this is not the case.Instead, the keySet method returns a class object ...