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01week/datatypes.js

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+'use strict';
+console.log('here');
+//Write a JavaScript program that adds 2 numbers together.
+const sumOfTwoNumbers=(num1, num2)=>{
+    return num1+num2
+
+}; 
+
+sumOfTwoNumbers(3,2);
+
+// Write a JavaScript program that only runs when 2 things are true.
+
+// function that recieves two items, if those two things are true.
+// methods: function, 2 arguments, if/ then statement
+
+const evaluatesToTrue=(arg1, arg2)=> {
+    if(arg1 && arg2){
+        return 'both are true'
+    }else{
+        return 'nope'
+    }
+};
+
+evaluatesToTrue(4, 6);
+evaluatesToTrue(null, 6);
+
+
+// pasted code
+
+const oneArgumentIsTrue=(arg1, arg2)=> arg1 || arg2;
+
+
+
+// 1. Write a JavaScript program to display the current day and time.
+const today = new Date();
+const day = today.getDay();    
+
+// 2. Write a JavaScript program to convert a number to a string.
+const num = 15;
+const n = num.toString();
+
+// 3. Write a JavaScript program to convert a string to the number.
+const stingToNum = '10';
+const s = parseInt();
+
+// 4. Write a JavaScript program that takes in different datatypes and prints out whether they are a:
+    // Boolean
+    console.log(typeof true);
+// expected output: "boolean"
+
+    // Null
+    const person = {firstName: 'Lawerence' , lastName: 'Williams'};
+    person = null;
+
+    // Undefined
+    console.log(typeof variableNotDeclared);
+// expected output: "undefined";
+
+    // Number
+    console.log(typeof 42);
+// expected output: "number"
+
+    // NaN
+    isNaN();
+
+    // String
+    console.log(typeof 'dance');
+// expected output: "string"
+
+// 5. Write a JavaScript program that adds 2 numbers together.
+const sumOfNums= (arg1, arg2)=>{
+    return arg1 + arg2
+    };
+
+// 6. Write a JavaScript program that runs only when 2 things are true.
+const sumOfNums= (arg1, arg2)=>{
+    if (typeOf arg1 === typeOf 'number' && typeof 'number'){
+    return arg1 + arg2
+     }
+    };
+
+// 7. Write a JavaScript program that runs when 1 of 2 things are true.
+    const bothTrue =(arg1, arg2)=>{
+      if(arg1 && arg2){
+        return 'true'
+      }
+    };
+
+// 8. Write a JavaScript program that runs when both things are not true.
+    const checkStrings=(a,b,c)=>{
+      if(typeof a === 'string' && typeof b === 'string' && typeof c === 'string'){
+        return 'awesome'
+      }
+    };
+    checkStrings('hello', '7', 'no')