JavaScript supports the following assignment operators − Sr.No Operator and Description 1 = (Simple Assignment ) Assigns values from the right side operand to the left side operand Ex: C = A + B will assign the value of A + B into C 2 += (Add and Assignment) It adds the right operand to … Read more
JavaScript supports the following logical operators − Assume variable A holds 10 and variable B holds 20, then − Sr.No Operator and Description 1 && (Logical AND) If both the operands are non-zero, then the condition becomes true. Ex: (A && B) is true. 2 || (Logical OR) If any of the two operands are … Read more
JavaScript supports the following comparison operators − Assume variable A holds 10 and variable B holds 20, then − Sr.No Operator and Description 1 = = (Equal) Checks if the value of two operands are equal or not, if yes, then the condition becomes true. Ex: (A == B) is not true. 2 != (Not … Read more
Let us take a simple expression 4 + 5 is equal to 9. Here 4 and 5 are calledoperands and ‘+’ is called the operator. JavaScript supports the following types of operators. Arithmetic Operators Comparision Operators Logical (or Relational) Operators Assignment Operators Conditional (or ternary) Operators Lets have a look on all operators one by … Read more
JavaScript Datatype One of the most fundamental characteristics of a programming language is the set of data types it supports. These are the type of values that can be represented and manipulated in a programming language. JavaScript allows you to work with three primitive data types − Numbers, 123, 120.50 etc. Stringsof text e.g. “This … Read more
Let us take a sample example to print out “Hello World”. We added an optional HTML comment that surrounds our JavaScript code. This is to save our code from a browser that does not support JavaScript. The comment ends with a “//–>”. Here “//” signifies a comment in JavaScript, so we add that to prevent … Read more
Hashes are one of the data structures available in Perl.A hash is an un-ordered group of key-value pairs. The keys are unique strings. The values are scalar values. Each value can be either a number, a string, or a reference. We’ll learn about references later. Hashes, like other Perl variables, are declared using the my keyword. The … Read more
SSH- SECURE SHELL It is used to Connect to the remote system through secure shell. It giveyou a copy of remote shell on your desktop.You can also create password less login to the remote system with the help of PUBLIC/PRIVATE keys. 1.For installing SSH open the terminal and type :- # su <— to become root and enter the password> # yum install openssh-server 2. After the completion of … Read more
CSS Selectors CSS selectors allow you to select and manipulate HTML element(s). CSS selectors are used to “find” (or select) HTML elements based on their id, classes, types, attributes, values of attributes and much more. 1. The element Selector The element selector selects elements based on the element name.You can select all <p> elements on … Read more
A CSS declaration always ends with a semicolon, and declaration groups are surrounded by curly braces: p {color:red;text-align:center;} To make the CSS code more readable, you can put one declaration on each line, like this: Example p { color: red; text-align: center; } CSS Comments Comments are used to explain your code, and may help you when you … Read more