How to type space characters in javascript

javascriptThe space character can be typed by pressing the space key on the keyboard. The use of space characters is also worth noting when writing JavaScript code.

Generally speaking, space characters can be used to enhance the readability of code and make the code easier to understand. Without affecting code execution, try to follow certain spacing specifications to make the code look clearer. The following are some common specifications for the use of spaces:

1. Spaces in statements: Spaces should be added between keywords, brackets, and operators to make the code easier to read. For example:

if (x > 0) {}
for (let i = 0; i < 10; i++) {}
let a = b + c;

2. Spaces in function definitions: Spaces should be added between function names, brackets, and parameter names to increase code readability. For example:

function sum(a, b) {
  return a + b;
}

3. Spaces in object definitions: Spaces should be added between colons and attribute values ​​to increase code readability. For example:

let person = {
  name: '张三',
  age: 18
};

4. Spaces in braces: You can choose to add or not add spaces before and after braces according to your personal habits. But try to be consistent.

When using spaces, you also need to pay attention to the following points:

1. Avoid adding too many spaces in one line, which will make the code difficult to read.
2. For some situations that require special processing, you can choose whether to add spaces according to the scenario. For example:

// 对于挨在一起的小括号，可以选择不添加空格，增加代码的紧凑度。
let result = (x + y) * (z - w);

// 对于字符串连接符，可以选择添加空格，提高代码可读性。
let message = 'Hello, ' + name + '!';

In short, when writing JavaScript code, rational use of space characters can make the code easier to understand and maintain.

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