How javascript converts letters to lowercase

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Javascript converts letters to lowercase: 1, use toLowerCase (), syntax "string.toLowerCase ()"; 2, use toLocaleLowerCase (), syntax "string.toLocaleLowerCase ()".

The operating environment of this tutorial: windows7 system, javascript1.8.5 version, Dell G3 computer.

Javascript converts letters to lowercase

Method 1: use the toLowerCase () method

The toLowerCase () method is used to convert strings to lowercase. The specific syntax format is as follows:

String.toLowerCase ()

Example:

Console.log ("A" .toLowerCase ()); console.log ("B" .toLowerCase ()); console.log ("C" .toLowerCase ())

Output result:

Method 2: use the toLocaleLowerCase () method

The toLocaleLowerCase () method converts the string to lowercase based on the locale of the host. The specific syntax format is as follows:

String.toLocaleLowerCase ()

Typically, this method returns the same results as the toLowerCase () method, and only a few languages, such as Turkish, have local case mappings.

Note: the toLocaleLowerCase () method does not change the original string.

Example:

[xss_clean] ("P" .toLocaleLowerCase ()); [xss_clean] ("H" .toLocaleLowerCase ()); [xss_clean] ("P" .toLocaleLowerCase ())

Output result:

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