Q451. What is the precedence order between local and global variables?
A local variable takes precedence over a global variable with the same name. Let's see this behavior in an example. ```javascript var msg = "Good morning"; function greet...
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Q452. What are javascript accessors?
ECMAScript 5 introduced javascript object accessors or computed properties through getters and setters. Getters uses the `get` keyword whereas Setters uses the `set` keyw...
Q453. How do you define property on Object constructor?
The `Object.defineProperty()` static method is used to define a new property directly on an object, or modify an existing property on an object, and returns the object. L...
Q454. What is the difference between get and defineProperty?
Both have similar results unless you use classes. If you use `get` the property will be defined on the prototype of the object whereas using `Object.defineProperty()` the...
Q455. What are the advantages of Getters and Setters?
Below are the list of benefits of Getters and Setters, 1. They provide simpler syntax 2. They are used for defining computed properties, or accessors in JS. 3. Useful to ...
Q456. Can I add getters and setters using defineProperty method?
Yes, You can use the `Object.defineProperty()` method to add Getters and Setters. For example, the below counter object uses increment, decrement, add and subtract proper...
Q457. What is the purpose of switch-case?
The `switch case` statement in JavaScript is used for decision making purposes. In a few cases, using the `switch case` statement is going to be more convenient than `if-...
Q458. Do browsers understand JSX code?
No, browsers can't understand JSX code. You need a transpiler to convert your JSX to regular Javascript that browsers can understand. The most widely used transpiler righ...
Q459. What are the conventions to be followed for the usage of switch case?
Below are the list of conventions should be taken care, 1. The expression can be of type either number or string. 2. Duplicate values are not allowed for the expression. ...
Q460. What are primitive data types?
A primitive data type is data that has a primitive value (which has no properties or methods). There are 7 types of primitive data types. 1. string 2. number 3. boolean 4...