nodejs space escape

Node.js is a JavaScript runtime based on the Chrome V8 engine. It is an event-driven, non-blocking I/O server-side programming language. In Node.js, we often encounter situations where spaces in strings need to be escaped. Next, this article will introduce how to escape spaces in Node.js.

In Node.js, use backslash() for space escaping. Specifically, when we want to use a space as part of a string, we need to precede it with a backslash. For example, the following code:

console.log('hello world');

The output result is:

hello world

In the above code, we add a backslash before the space, which tells Node.js that the space is a transition Definition character, not an ordinary space.

Not just spaces, there are many other special characters that need to be escaped in Node.js, as shown in the following table:

Special Characters	Escape characters
	Enter

   | 换行     |

| | Tab|
| | Backspace|
| ' | Single quote|
| " | Double quote|
| \ | Backslash|

When we use these special characters in a string, we need to use backslash to escape them. For example, the following code:

console.log('hello
world');

The output result is:

hello
world

In the above code, we used a newline character in the string and escaped it using a backslash.

In addition, Node.js also provides another character The way strings are defined, that is, template strings. Template strings are wrapped with backtick marks (`), and variables and expressions can be used in them. In template strings, spaces and other special characters are escaped the same as ordinary strings .For example, the following code:

const name = 'Tom';
const age = 18;
console.log(`My name is ${name}.
I am ${age} years old.`);

The output result is:

My name is Tom.
I am 18 years old.

In the above code, we use the template string and backslash to escape the newline character.

In short, in Node.js, using backslash to escape spaces and other special characters is a common operation. Whether in ordinary strings or template strings, it can help us deal with characters Spaces and other special characters in the string.

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