JSONValid (Function)

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JSONValid (Function)

In french: JSONValide

Checks the validity of a JSON string.

New in SaaS

This function is now available in browser code.

Note: This function is only available from WINDEV Suite SaaS 2025 - Update 1.
For more details, see Using new features exclusive to WINDEV Suite SaaS 2025.

Example

// Check if the JSON string is valid 
IF JSONValid(sJSON) THEN
	// Yes => Initialize JSON variable
	oJSON is JSON = StringToJSON(sJSON)
	...
END

Syntax

<Result> = JSONValid(<JSON string>)

<Result>: Boolean

True if the JSON string is valid,
False otherwise. If an error occurs, use ErrorInfo for more details on the error.

<JSON string>: Character string

String containing the JSON data (7-bit ASCII + JSON or UTF-8 encoding).

Remarks

Encoding

The encoding used corresponds to the JSON standard:

7-bit ASCII encoding for the first 128 characters, i.e., unaccented characters
JSON encoding for other characters: "\u" followed by the character code in 4-byte hexadecimal format. For example, the "é" character (ASCII code 233, hexadecimal code E9) would be encoded as "\u00E9".

New in SaaS

Remark

Comments are not supported during JSON verification in browser code.

Component: wd300vm.dll