ES6 is the first time that JavaScript has built-in modules. Explanation: The variable's value will increase until it gets equal to 10, then the control will exit the loop's definition. You can split code into multiple modules and it will continue to work (as long as you dont try to change the values of imports). This section gives pointers into the ECMAScript 2015 (ES6) language specification. VS Code will try to automatically detect your debug environment, but if this fails, you will have to choose it manually: Here is the launch configuration generated for Node.js debugging: If you go back to the File Explorer view (E (Windows, Linux Ctrl+Shift+E)), you'll see that VS Code has created a .vscode folder and added the launch.json file to your workspace. In the process of shifting, the data element is removed from the beginning of the array, and all subsequent elements are shifted and the new length of the array is returned. If the comparison performed in the "if" statement evaluates to true, then the instruction written in the if statement will be executed. Download Adobe Captivate and create beautiful, mobile-ready courses in minutes with Quick Start Projects, ready-to-go slides and out-of-the-box interactions. Explanation: A block of statement can be understand as the set of the zero or more statements. The syntax of JavaScript is loosely based on the syntax of Java. In libraries, you can usually avoid cyclic dependencies via careful design. "${workspaceFolder}/node_modules/gulp/bin/gulpfile.js", "launch program that reads a file from stdin", Configure IntelliSense for cross-compiling, Automatically open a URI when debugging a server program, Redirect input/output to/from the debug target. If you import a value into a variable, the value is copied twice: once when it is exported (line A) and once it is imported (line B). var variables can be accessed in the window object because they cannot be globally accessed. However, the conditional operator can also be used in place of the "if else" statements as well. The "Reverse()" method, which is used along with it, reverses the specified array, and it stores the array into the memory once it gets reversed. foo would simply be undefined. Used by thousands of teachers all over the world. Explanation: In JavaScript, the "unshift()"," shift()" methods work like just as push() and pop() but with a slight change, unlike the push and pop the unshift(), unshift() both insert and remove a data item from the beginning instead of from the end of the array. For example the "date.toLocaleSting is also one of the predefined functions of the javascript that is used for converting time and date into a string. Number, String, Boolean, Object, and Undefined. Sports are good for everyones mental and physical health; you can play any sport to build your personality and teach different skills. 110) Which one of the following options is the correct output for the given code of JavaScript? In order to start a debug session, first select the configuration named Launch Program using the Configuration dropdown in the Run and Debug view. Voxies (VOXEL): Voxie is a gaming token designed with the 3D turn-based RPG model for playing games on the blockchain. Depending on the request (attach or launch), different attributes are required, and VS Code's launch.json validation and suggestions should help with that. Lets take your example for explanation, var obj = { resultCodeId: data[i].resultCodes[j].resultCodeId }; this means resultCodeId is a memeber of "obj" object. 28) What will be the output of the following JavaScript code? It passes the data-items of an array into another array. Explanation: The "reverse()" method used in the above given code is one of the predefined methods of the JavaScript, which is used to shift the data elements of an array in a reverse order. The use of "let" just defers this problem. 47) What we will get if we compare the "one" with "8" using the less than operator ("one"<8)? Group mail addresses, such as those for marketing, support, sales, etc. traversing the array from the 0 index value) just like it working in the above code. Another important point is that switch statements are also used as an alternative to "if-else" statements to reduce the complexity and size of the code. The value of a variable may vary. 18) Which of the following option is used as hexadecimal literal beginning? 140) Which of the following is the correct JavaScript syntax to access the element using HTML code? Post questions and get answers from experts. JavaScript Style Guide. Content available under a Creative Commons license. GitBook. In addition to debugging a program, VS Code supports running the program. Explanation: The variables whose value can be modified that kind of variable are known as Mutable variable. They enable cyclic dependencies, even for unqualified imports (as explained in the next section). We use the assignment operator = to assign a value to a variable. This method executes a provided specific method on each data-item or element of the array in the left to right manner. Data Types and Values in Python and JavaScript. As a result, you get several benefits, which are described next. Variables. Please note that the type property cannot be placed inside a platform-specific section, because type indirectly determines the platform in remote debugging scenarios, and that would result in a cyclic dependency. The main difference between the two is that const variable requires an initial value, and its value can not be reassigned once initialized. var and variables in ES5 has scopes in functions meaning the variables are valid within the function and not outside the function itself. suffixed by the environment variable name. Answer: B: JavaScript is a high-level programming language. Explanation: The given pattern is applied on the string "text" enclosed in the parenthesis. Their constructor is Reflect.Loader. As a general rule, keep in mind that with cyclic dependencies, you cant access imports in the body of the module. Having both named exports and a default export in a module, 16.6.1. Answer: C: