Method toUpperCase() mengembalikan nilai string pemanggil dikonversi ke huruf besar.
Sintaks
str.toUpperCase()Deskripsi
Method toUpperCase() mengembalikan nilai string diconversikan ke huruf besar. toUpperCase() tidak mempengaruhi nilai string itu sendiri.
Contoh
Penggunaan toUpperCase()
console.log('alphabet'.toUpperCase()); // 'ALPHABET'
Spesifikasi
| Spesifikasi | Status | Comment |
|---|---|---|
| ECMAScript 1st Edition (ECMA-262) | Standard | Initial definition. Implemented in JavaScript 1.0. |
| ECMAScript 5.1 (ECMA-262) The definition of 'String.prototype.toUpperCase' in that specification. |
Standard | |
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'String.prototype.toUpperCase' in that specification. |
Standard | |
| ECMAScript 2017 Draft (ECMA-262) The definition of 'String.prototype.toUpperCase' in that specification. |
Draft |
Kompabilitas browser
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |