node

node

index.js

@@ -2,3 +2,161 @@ let arry = [2, 4, 6, 8, 10, 12, 14, 16];
 let lastElement = arry[arry.length - 1];
 
 console.log(lastElement);
+ //variables - container for data to be used
+//  for later
+
+
+//  let - are mutable / values that can change
+let number = 15
+
+number = 10
+
+console.log(number)
+
+// console.log is putting it into the consoles
+
+// const / immutable / cannot change
+const name = 'Collin'
+
+// 'Collin' - a string, boolean, numbers
+// because it's on the right side of the '='
+
+// name = 'Vince'
+
+// var - won't really use
+
+var number2 = 0
+
+number2 = 10
+
+//  Data Types
+
+// Number/integer
+let x = 2
+
+let y = 2.5
+
+let z = x + y
+
+let b = 1000000
+
+console.log(2**4)
+
+// 2**4 means 2 to the power of 4. this is used
+// for gaming
+
+// String - sequence of characters
+// '', "", ``
+const name2 = "You're"
+
+console.log(name2)
+
+// Concatenation - adding two strings together
+let sentence = 'hi'
+let sentence2 = 'bye'
+let sentence3 = sentence+sentence2
+let sentence4 = sentence + ' ' + sentence2
+let sentence5 = sentence + sentence2
+let sentence6 = `Hi, my name is PhaNyia`
+// ${} - template literal - always use bat tics
+let sentence7 = `Hi, my name is PhaNyia. ${sentence2}`
+
+console.log(sentence3)
+console.log(sentence4)
+console.log(sentence5)
+console.log(sentence6)
+// ${} - template literal - always use bat tics
+console.log(sentence7)
+
+let o =200
+
+let s = `${o}`
+
+let num = '20,000'
+
+let num2 = 20
+
+console.log(num + num2)
+
+const num3 = 10
+
+console.log(num3) // prints to the console
+
+// Booleans
+
+// Truthy - anything with value
+// 1
+// 'Great' - a string
+// True
+
+// Falsy - undefined; no value
+// 0
+// ' ' - empty string
+// false
+// undefined
+// null
+
+// console.log(Boolean()) - can let you know if
+// something is true or false
+// negative numbers will still be a truthy
+console.log(Boolean(-1))
+
+
+let sentence8 = `Hi, my name is ${name} and I am ${num3}`
+
+
+
+
+// what is an array ? - a list of data
+let emptyArr = []
+console.log(emptyArr);
+const lengthOfEmptyArray = emptyArr.length;
+console.log(lengthOfEmptyArray);
+
+const mixArr = [1, "Collin"]
+console.log(mixArr)
+const name4 = "Lucycan";
+
+const nameArr = ["Lucycan", "Collin", "Mark"];
+console.log(nameArr);
+const lengthOfNameArr = nameArr.length;
+console.log(lengthOfNameArr);
+
+const hello = `Hi, my name is ${nameArr[1]}.`;
+console.log(nameArr[1])
+
+
+// submitting form
+nameArr.push("Cortez");
+nameArr.push("Romeo")
+console.log(nameArr);
+
+// grabs the most recent submission so it will grab "Romeo"
+console.log(nameArr.pop());
+let arr = []
+
+//what is an array?
+
+const emptyArr = [];
+console.log(emptyArr);
+const lengthOfEmptyArry = emptyArr.length;
+console.log(lengthOfEmptyArry);
+
+const mixArr = [1, Collin]
+
+const nameArr = ["Lucycan", "Collin", "Mark"]
+console.log(nameArr)
+const lengthOfNameArry = nameArr.length;
+console.log(lengthOfNameArr)
+
+const hello = `Hi my name is ${nameArr[1]}`
+console.log(Hello);
+
+console.log(nameAAr[1]);
+
+nameArr.push("Cortez");
+nameArr.push("Remeo");
+console.log(nameArr);
+
+console.log(nameArr.pop())
+

note.js

@@ -0,0 +1,30 @@
+let arr = [1,2,3,4,5]
+
+let lastItem = arr.slice(-1)
+
+let num = lastItem.slice(0)
+
+console.log(arr, num)
+
+arr1.push(90)
+
+arr1.pop()
+console.log(arr1)
+
+console.log(Math.random() * arr1.length)
+
+// For Loops
+// It repeats a task or code a certain number of times based on a condition
+
+
+//split() - splits a string by the specified character
+
+// join() - joins array elements between a specified character 
+// let arr = ['c', 'o', 'l','l','i','n']
+
+let str = 'collin'
+
+console.log=(arr.join(''))
+
+let arr = 
+console.log