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+.idea
+node_modules
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>thenewboston</title>
+</head>
+<body>
+    <script src="main.js"></script>
+</body>
+</html>
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+
+/********** Scope **********/
+
+// each function can only access its own scoped variables
+function one() {
+    var a = 5;
+    console.log(a);
+}
+
+function two() {
+    var a = 20;
+    console.log(a);
+}
+
+one(); // 5
+two(); // 20
+
+
+/********** Nested scope **********/
+
+function outer() {
+    var a = 10;
+
+    // inner() has access to a since it is nested inside (part of) outer()
+    function inner() {
+        var b = 27;
+        console.log(a + b);
+    }
+
+    inner();
+
+    // can only access a
+    console.log(a);
+
+}
+
+outer();
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+
+/********** Objects **********/
+
+// objects are composed of multiple names and values
+var person = {
+    name: "Bucky",
+    age: 87
+};
+console.log(person.name); // preferred
+console.log(person['age']); // also valid
+
+
+/********** Arrays **********/
+
+// array values are retrieved by index, not name
+var food = ['bacon', 'tuna', 'corn'];
+console.log(food[2]);
+
+
+/********** Equality **********/
+
+var a = '26';
+var b = 26;
+
+console.log(a==b); // true (only checks value)
+console.log(a===b); // false (compares type as well)
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+# JavaScript Lessons
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+var isValid = false;
+
+function validParentheses(arr){
+    if (arr[0] == '(' && arr[arr.length - 1] == ')'){
+        if (arr.length == 2)
+            isValid = true;
+        else
+            validParentheses(arr.slice(1, arr.length - 1));
+    }
+    return isValid;
+}
+
+console.log(validParentheses('((()))'.split('')));