Add examples

Author: tshemsedinov

JavaScript/1-array.js

@@ -0,0 +1,18 @@
+'use strict';
+
+const arr = new Array(10);
+console.dir({ arr });
+
+const even = [2, 4, 6, 8, 10, 12];
+console.dir({ even });
+
+console.dir({
+  length: even.length,
+  first: even[0],
+  last: even[even.length - 1]
+});
+
+console.dir({
+  'even.slice(1, 4)': even.slice(1, 4),
+  'even.splice(2, 4, 3, 7, 9)': even.splice(2, 4, 3, 7, 9)
+});

JavaScript/2-hash.js

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+'use strict';
+
+const fs = require('fs');
+const v8 = require('v8');
+
+const SYMBOL_FILENAME = Symbol('fileName');
+
+const hash1 = {
+  key: 'value',
+  [SYMBOL_FILENAME]: './file0.v8'
+};
+
+hash1.key2 = 'value2';
+hash1['key' + 3] = 'value3';
+hash1[SYMBOL_FILENAME] = './file1.v8';
+hash1[SYMBOL_FILENAME] = './file2.v8';
+hash1[Symbol('fileName')] = './file3.v8';
+
+console.log('FileName: ' + hash1[SYMBOL_FILENAME]);
+
+for (const key in hash1) {
+  const value = hash1[key];
+  console.log({ key, value });
+}
+
+console.dir({ keys: Object.keys(hash1) });
+console.dir({ hash1 });
+
+const save = collection => fs.writeFile(
+  collection[SYMBOL_FILENAME], v8.serialize(collection), () => {}
+);
+
+save(hash1);

JavaScript/file2.v8

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+�o"key"value"key2"value2"key3"value3{