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showing results for - "array prototype js"
Adrián
01 May 2019
1Array.prototype.myUcase = function() {
2  for (i = 0; i < this.length; i++) {
3    this[i] = this[i].toUpperCase();
4  }
5};
6var fruits = ["Banana", "Orange", "Apple", "Mango"];
7fruits.myUcase();
8console.log(fruits)
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