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Most people do not understand the knowledge points of this article "JavaScript operators, expressions and keywords", so the editor summarizes the following contents, detailed contents, clear steps, and has a certain reference value. I hope you can get something after reading this article. Let's take a look at this "JavaScript operator, expression and keyword usage" article.

JavaScript uses the arithmetic operator (+-* /) to calculate the value:

(7 + 8) * 10

JavaScript uses the assignment operator (=) to assign a value to a variable:

Var x, y

Var x = 7

Var y = 8

JavaScript expression

An expression is a combination of values, variables, and operators, and the result is a value.

6 * 10

Expressions can also contain variable values:

X * 10

Values can be of many types, such as numeric values and strings.

For example, "Bill" + "+" Gates ", calculated as" Bill Gates ":

"Bill" + "+" Gates "

JavaScript keyword

The JavaScript keyword is used to identify the action being performed.

The var keyword tells the browser to create a new variable:

Var x = 7 + 8

Var y = x * 10

JavaScript comment

Not all JavaScript statements are executed.

The code between the double slash / / or / * and * / is considered a comment.

Comments are ignored and not executed:

Var x = 7; / / will execute

/ / var x = 8; will not execute

The above is the content of this article on "how to use JavaScript operators, expressions and keywords". I believe we all have some understanding. I hope the content shared by the editor will be helpful to you. If you want to know more about the relevant knowledge, please follow the industry information channel.

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