Operator precedence

script.js

@@ -44,7 +44,7 @@ console.log(firstName + ' ' + lastName);
 /*****************************
 * Basic operators
 */
-
+/*
 var year, yearJohn, yearMark;
 now = 2018;
 ageJohn = 28;
@@ -64,4 +64,34 @@ console.log(typeof johnOlder);
 console.log(typeof ageJohn);
 console.log(typeof 'Mark is older tha John');
 var x;
-console.log(typeof x);
+console.log(typeof x);
\ No newline at end of file
+*/
+
+
+
+/*****************************
+* Operator precedence
+*/
+
+var now = 2018;
+var yearJohn = 1989;
+var fullAge = 18;
+// Multiple operators
+var isFullAge = now - yearJohn >= fullAge; // true
+console.log(isFullAge);
+// Grouping
+var ageJohn = now - yearJohn;
+var ageMark = 35;
+var average = (ageJohn + ageMark) / 2;
+console.log(average);
+// Multiple assignments
+var x, y;
+x = y = (3 + 5) * 4 - 6; // 8 * 4 - 6 // 32 - 6 // 26
+console.log(x, y);
+// More operators
+x *= 2;
+console.log(x);
+x += 10;
+console.log(x);
+x--;
+console.log(x);
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