Summary of JavaScript performance optimization and javascript Performance Optimization
With the continuous promotion of web technology, more and more applications are processing JavaScript on the client, making the performance of JavaScript in the browser the most important availability problem faced by developers. This problem is complicated due to the blocking feature of JavaScript. That is to say, when the Browser executes JavaScript code, it cannot do anything at the same time. This article details how to correctly load and execute JavaScript code to improve its performance in the browser.
In J2EE programming, the most popular scripting language is JavaScript. When JavaScript is used, we usually consider its performance. Therefore, we summarize the summary of the JavaScript Performance Optimization Method for query.
When using JavaScript, you will often encounter the String concatenation problem. What should I do if you encounter the above problems when using Java programming?
NX Student: Instructor, using StringBulider or StringBuffer
Instructor: Correct answers. Using StringBuilder or StringBuffer can avoid creating too many objects and reduce system performance.
Now, let's go back to the question. We will still solve the above problem in JavaScript.
First, let's take a look at the handling methods of NX students:
The teacher almost laughed at the implementation of NX students. The implementation of this type of garbage has ruined your reputation.
The teacher said with a smile: Your implementation is equivalent to the level of primary school students, a random combination of a pile of junk letters. After that, I only heard the SB teacher typing the code on the keyboard. The NX student has not responded yet, and the teacher has completed the Code:
Through running and comparing the above Code, the teacher's code performance is significantly better than that of NX students, and NX student code will often lead to IE downtime.
NX students immediately admired the results of code execution and decided to learn from their teachers with an empty mind and constantly improve themselves ......
Although this story has come to an end, the JavaScript journey of teachers and NX students continues ......