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01week/datatypes.js

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+
+
+// Write a JavaScript program to display the current day and time.
+
+
+const dateFunc = (day, time) => {
+    console.log("Today is: " + day + ", the time is now: " + time)
+}
+
+dateFunc("Thursday","7:00pm")
+
+//Write a JavaScript program to convert a number to a string.
+
+const functionX = (num1)=> {
+    if (typeof num1 === 'number'){ 
+      return num1.toString()
+    }
+  }
+ functionX(6);
+
+
+//  Write a JavaScript program to convert a string to the number.
+
+const convStringFunction = (arg1)=> {
+    return parseInt(arg1);
+}
+convStringFunction('109');
+
+/* Write a JavaScript program that takes in different datatypes and prints out whether they are a:
+Boolean
+Null
+Undefined
+Number
+NaN
+String */
+
+
+const checkTypeFunction = (myDatatype) => {
+
+if(typeof myDatatype === 'boolean') {
+    console.log('Boolean');
+};
+if (typeof myDatatype === 'null') {
+    console.log('Null');
+};
+if (typeof myDatatype === 'undefined') {
+    console.log('Undefined');
+};
+
+if (typeof myDatatype === 'number') {
+    console.log('Number');
+};
+if (typeof myDatatype === NaN) {
+    console.log('NaN');
+};
+
+if (typeof myDatatype === 'string') {
+        console.log('String');
+    }
+
+}
+
+checkTypeFunction('cat');
+
+
+
+// Write a JavaScript program that adds 2 numbers together.
+
+const addFunction = (num1, num2) => {
+    return num1 + num2;
+}
+addFunction (6,7);
+
+//Write a JavaScript program that runs only when 2 things are true.
+
+const trueFunction = (arg1, arg2) => {
+if (arg1 && arg2) {
+    return 'both are true'
+ } 
+}
+trueFunction('cat',6);
+
+
+//Write a JavaScript program that runs when 1 of 2 things are true.
+const oneTrueFunction = (arg1, arg2) => {
+    if ( arg1 || arg2 === true) {
+        return 'one is true'
+    }
+}
+oneTrueFunction('cat',0)
+
+
+//Write a JavaScript program that runs when both things are not true. */ 
+
+const notTrueFunction = (arg1, arg2) => {
+    if (arg1 && arg2 != true) {
+        return 'both are false'
+     } 
+
+    }
+    notTrueFunction(0,0);