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Operators

Comparison operators:

You can evaluate a situation by comparing one value in the script to what you expect it to be, and the result will always be boolean.

• You can use several tools to compare values such as:

1- (==) “is equal to”, the operator compares if two values if they are the same.

2- (!=) “is not equal to”, the operator compares the two values if they are not the same.

3- (===) “is strict equal to”, the operator compares the two values if the values and the datatype are the same.

4- (!==) “is strict not equal to”, the operator compares the two values if the values and the datatype are not the same.

5- (<) “is less than”, the operator compares if the number on the left is less than the one on the right.

6- (>) “is greater than”, the operator compares if the number on the left is greater than the one on the right.

7- (<=) “is less than or equal”, the operator compares if the number on the left is less thaan or equal the one on the right.

8- (>=) “is greater than or equal”, the operator compares if the number on the left is greater than or equal the one on the right.

Llogical operators:

Comparison operators usually return single values, logical operators allowes you to compare the results of the comparison operators.

• You can use several logical operators to compare such as:

1- (&&) “logical And”, this operator tastes more than one condition, and to have “True” as your result all conditions must be true.

2- (

) “logical Or”, this operator tastes more than one condition, and to have “True” as your result atleast one conditions must be true.

3- (!) “logical not”, this operator takes the boolean and inverts it.

Loops

Loops check a condition, it returns true a code block will run, then the condition will be checked again and if it still return true the code block will run again, it repeates until the condition returns false.

• There are several types of loops such as:

1- For loop: it is used to run a code specific number of times, the condition is usually a counter which is used to tell how many times the loop should run.

A for loop is consisted of three parts which is:

• Initialization: create a vaariable and sit it at a starting point it is usually referred to as “i”.

• Condition: the loop should continue to run until the counter reaches a specified number.

• Update: every time the loop has run there is an updat on the variable.

2- While loop: if you don’t know how many times you should run the loop a while loop is the best to use.