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This article mainly introduces "how javascript converts lowercase letters to uppercase". In daily operation, I believe many people have doubts about how javascript converts lowercase letters to uppercase. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts of "how javascript converts lowercase letters to uppercase". Next, please follow the editor to study!

JS will lowercase letters to uppercase methods: 1, the use of toUpperCase () function, syntax "string.toUpperCase ()"; 2, the use of toLocaleUpperCase () function, syntax "string.toLocaleUpperCase ()".

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

Javascript's method of converting lowercase letters to uppercase

Method 1: using toUpperCase ()

The toUpperCase () method is used to convert strings to uppercase.

Syntax:

String.toUpperCase ()

Return value: a new string in which all lowercase characters of string are converted to uppercase characters.

Var str= "Hello World!" [xss_clean] (str.toUpperCase ())

Method 2: using toLocaleUpperCase ()

The toLocaleUpperCase () method is used to convert strings to uppercase.

Syntax:

String.toLocaleUpperCase ()

Return value: a new string in which all lowercase characters of string are converted to uppercase characters.

Note: the toLocaleUpperCase () method converts strings to uppercase locally. Only a few languages, such as Turkish, have local case mappings, and the return value of all this method is usually the same as toUpperCase ().

Var str= "Hello World!" console.log (str.toLocaleUpperCase ())

At this point, the study on "how javascript converts lowercase letters to uppercase" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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