Data types is an important concept. There have some data type as string, number, boolean, undefined, null, operator, objects, array etc. Strings are written with quotes. Booleans can only have two values true or false. Boolean are used in conditional statement.
4. Cross Browser Testing
When our project is ready then we need to test our project get ready to see all browser. It’s very important. Cross Browser means google chrome, mozilla firefox, microsoft edge, opera mini. if you discover bugs in browsers, you should report them.
Arrow functions allow us to write shorter function syntax. If the function has only one statement, and the statement returns a value, you can remove the brackets. Arrow function is es6 edition. Arrow function alter normal function but it is working is same.
Spread Operator for argument lists, … can be used anywhere in the array literal, and may be used more than once. Spread operator have contain many value. Spread operator is very important and it is reduce our many task. Spread syntax goes one level deep while copying an array.
10. Balancing Client And Server Caching in Web Application
A Web cache or HTTP cache is an information technology for the temporary storage caching of web documents, such as web pages, images, and other types of web multimedia, to reduce server lag. A web cache system can refer either to an appliance or to a computer program.