Variable part 2

The Equal Sign



In JavaScript, the equal sign (=) is called the "assignment" operator, rather than an "equal to" operator.
For example, x = y will assign the value of y to x.
A variable can be declared without a value. The value might require some calculation, something that will be provided later, like user input.
A variable declared without a value will have the value undefined.
What is the "=" (equal sign) called in JavaScript?
Assignment operator
Equal to
Is equivalent

Comments

Post a Comment

Popular posts from this blog

Comparison Operators part 2

Image
Comparison Operators The table below explains the comparison operators. When using operators, be sure that the arguments are of the same data type; numbers should be compared with numbers, strings with strings, and so on. Please enter the corresponding operators according to the comments at right. val1      == val2 // are equal val1  !      val2 // not equal val1  <val2 // less than val1 ===      val2 // are strict equal (identical)
Read more

Other way to create array part 2

Image
RSES CODE PLAYGROUND DISCUSS TOP LEARNERS Other Ways to Create Arrays 40 2/2       Creating Arrays JavaScript arrays are dynamic, so you can declare an  array  and not pass any arguments with the Array()  constructor . You can then add the elements dynamically. var courses = new Array () ; courses[0] = "HTML"; courses[1] = "CSS"; courses[2] = "JS"; courses[3] = "C++"; Try It Yourself You can add as many elements as you need to. Array Literal For greater simplicity, readability, and execution speed, you can also declare arrays using the  array  literal  syntax. var courses = ["HTML", "CSS", "JS"]; Try It Yourself This results in the same  array  as the one created with the  new Array()  syntax.  You can access and modify the elements of the  array  using the index number, as you did before. The  array  literal  syntax is the recommended way...
Read more

Math operator part 3

Division The / operator is used to perform division operations: var x = 100 / 5; document.write(x); // Outputs 20 Try It Yourself Remember to handle cases where there could be a division by 0. Enter the character designated for division:    /
Read more