Evaluate a situation by comparing one value in the script to what you expect it might be. The result will be a Boolean: True or false.
Is equal to == compares two values to check if they are the same
Is not equal to != compares two values to check if they are not the same
Strict equal to === compares two values to verify that both the value and the data type are the same
Strict not equal to !== compares two values to verify that both the value and the data type are different
Greater than: 8 > 3 returns true
Less than: 5 < 9 returns true
Greater than or equal to >=
Less than or equal to <=
The operators used to return the result of multiple comparison operators
| **((5 < 12) | (8 >= 2))** |
Logical AND &&
| Logical OR ** | ** |
A loop is block of code that will keep running as long as the condition is true. The most common types of loops are:
For loop; used when the code has to run specific number of times. It uses a counter as a condition
While loop; used when the number of repetitions is unknown
Do while loop; the fundamental difference between this loop and while loop is that the code will run at least once even if the condition evaluates to false
** A for loop consists of variable initialization, condition, and update.
Example
Loop through the indices of an array to collect the car names from the cars array:
var cars = [“BMW”, “Volvo”, “Saab”, “Ford”]; v/ar text = “”; var i = 0; while (i < cars.length) { text += cars[i] + “
”; i++; }