Question

JavaScript

1. Write a function which receives one argument (string) and converts the string to uppercase. function('abc') // returns 'ABC'

2. Write a function that accepts an array and a value. Find and return the first array element with bigger than given value. function([5,15,4],6) //returns 15

DO NOT USE THESE IN-BUILT FUNCTIONS BELOW

endsWith() includes() indexOf() lastIndexOf() localeCompare() match() repeat() replace() search() slice() split() startsWith() substr() substring() toLocaleLowerCase() toLocaleUpperCase() toLowerCase() toString() toUpperCase() trim() valueOf() trimLeft and trimRight unshift() valueOf() includes() indexOf() lastIndexOf() localeCompare() match() repeat() replace() search() slice() split() startsWith() substr() substring() toLocaleLowerCase() toLocaleUpperCase() toLowerCase() toString() toUpperCase() trim() valueOf() trimLeft and trimRight unshift() valueOf()   
concat() copyWithin() every() fill() filter() find() findIndex() forEach() indexOf() isArray() join() lastIndexOf() map() pop() push() reduce() reduceRight() reverse() shift() slice() some() sort() splice() toString()

Answer 1

If you have any doubts, please give me comment...

function toUpper(str) {

var newStr = '';

for (var i = 0; i < str.length; i++) {

var charCode = str[i].charCodeAt(0);

if ((charCode >= 97 && charCode <= 122) || (charCode >= 224 && charCode <= 255)) {

newStr += String.fromCharCode(charCode - 32);

} else {

newStr += str[i];

}

}

return newStr;

}

function biggerThan(arr, val) {

for (var i = 0; i < arr.length; i++) {

if (arr[i] > val)

return arr[i];

}

}

console.log(toUpper("abc"));

console.log(biggerThan([5, 15, 4], 6));