How to solve the node 400 error problem

Node 400 error solution: 1. Check the nodeJS request HTTP error message; 2. Use the JavaScript encodeURI() function to encode the URL containing Chinese, using syntax such as "encodeURI(URIstring)".

The operating environment of this article: Windows 7 system, nodejs version 10.16.2, Dell G3 computer.

How to solve the node 400 error problem?

nodeJS request HTTP error: 400, please use the JavaScript encodeURI() function to encode the URL containing Chinese

JavaScript global object

Definition and usage

encodeURI() function can encode a string as a URI.

Syntax

encodeURI(URIstring)

Parameters	Description
URIstring	Required. A string containing the URI or other text to be encoded.

Return value

A copy of the URIstring, with some characters replaced by hexadecimal escape sequences.

Description

This method does not encode ASCII letters and numbers, nor does it encode these ASCII punctuation characters: - _ . ! ~ * ' ( ) .

The purpose of this method is to completely encode the URI, so the encodeURI() function will not escape the following ASCII punctuation marks that have special meanings in the URI: ;/?:@& = $,

#Tips and comments

Tips: If the URI component contains delimiters, such as? and #, you should use the encodeURIComponent() method to encode each component separately.

Example

In this example, we will use encodeURI() to encode the URI:

<script>

document.write(encodeURI("http://www.w3school.com.cn")+ "<br />")
document.write(encodeURI("http://www.w3school.com.cn/My first/"))
document.write(encodeURI(",/?:@&=+$#"))

</script>

Output:

http://www.w3school.com.cn
http://www.w3school.com.cn/My%20first/
,/?:@&=+$#

Recommended learning:《node.js video tutorial》

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