JQuery drag and drop elements to change the size implementation code _ jquery

& Quot; drag and drop an element to change the size & quot; in fact, and & quot; drag an element & quot;. The following is a source code prototype. After understanding the principle, we can expand other practical applications, the idea is much simpler and clearer. The principle of "Drag and Drop elements to change the size" is actually different from that of "drag elements, it mainly involves the use of top, left, width, and height, which is relatively easy to implement. The following is a source code prototype. After you understand the principle and then expand other practical applications, the idea becomes simpler and clearer.

Below is the JavaScript Code

The Code is as follows: