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30-Days-Of-React
mirror of https://github.com/Asabeneh/30-Days-Of-React
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finished the first set of exercises

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pull/285/head
Chervix 3 years ago
parent d0c066fcb9
commit 6839393dd1
2 changed files with 92 additions and 0 deletions
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82
01_Day_JavaScript_Refresher/exercise_01.js
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let arr = Array() //1
let arr1 = ["oorah", "Help me", "hooray", true, false, 'k', 20] //2
console.log(arr1.length) //3
console.log(arr1[0]) //4
console.log(arr1[Math.floor(arr1.length / 2)]) //4
console.log(arr1[arr1.length -1]) //4
let mixedDataTypes = ["yooo", 'p', true, 9, 9.8, null]
let itCompanies = ["facebook", "google", "microsoft", "apple", "ibm oracle", "amazon"] //6
console.log(itCompanies) //7
console.log(itCompanies.length) //8
console.log(itCompanies[0]) //9
console.log(itCompanies[Math.floor(itCompanies.length / 2)]) //9
console.log(itCompanies[itCompanies.length - 1]) //9
for(let x in itCompanies)
{
console.log(itCompanies[x]) //10
}
for(let x in itCompanies)
{
let new_str = itCompanies[x]
new_str = new_str.toUpperCase()
itCompanies[x] = new_str
console.log(itCompanies[x]) // 11
new_str = itCompanies[x]
new_str = new_str.toLowerCase()
itCompanies[x] = new_str
}
console.log(itCompanies[0] + ", " + itCompanies[1] + ", " + itCompanies[2] + ", " + itCompanies[3] + ", " + itCompanies[4] + ", and " + itCompanies[5] + " are big IT companies") //12
function check_company(company)
{
for(let x in itCompanies)
{
if(itCompanies[x] == company)
{
return itCompanies[x]
}
}
return "company not found"
}
let starbucks = check_company("starbucks")
console.log(starbucks) //13
let amazon = check_company("amazon")
console.log(amazon) //13
function remove_o(arr)
{
for(let x in arr)
{
let count = 0
let current_string = arr[x]
for(let i in current_string)
{
if(current_string[i] = 'o')
{
count++
}
if(count == 2)
{
arr.splice(i - 1, 1)
}
}
}
}
remove_o(itCompanies)
console.log(itCompanies) //14
itCompanies = ["facebook", "google", "microsoft", "apple", "ibm oracle", "amazon"]
console.log(itCompanies.sort()) //15
console.log(itCompanies.reverse()) //16
itCompanies = ["facebook", "google", "microsoft", "apple", "ibm oracle", "amazon"]
console.log(itCompanies.splice(3, 3)) //17
console.log(itCompanies.splice(0, 3)) //18
itCompanies = ["facebook", "google", "microsoft", "apple", "ibm oracle", "amazon"]
console.log("untested")
itCompanies.splice(2, 2)
console.log(itCompanies) //19
itCompanies = ["facebook", "google", "microsoft", "apple", "ibm oracle", "amazon"]
itCompanies.shift()
console.log(itCompanies) //20
itCompanies = ["facebook", "google", "microsoft", "apple", "ibm oracle", "amazon"]
itCompanies.pop()
console.log(itCompanies) //21
itCompanies.length = 0;
console.log(itCompanies) //22

10
01_Day_JavaScript_Refresher/index.html
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<!DOCTYPE html>
<html>
<head>
<title>I am new to javascript</title>
</head>
<body>
I am new to javascript. I hope this works
<script src ="exercise_01.js"></script>
</body>
</html>
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