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Introduction to If...Else conditional statements in JavaScript

巴扎黑
巴扎黑Original
2017-08-10 13:56:191315browse

[Introduction] When you write code, you often need to complete different behaviors based on different conditions. You can use conditional statements in your code to accomplish this task. In JavaScript, we can use the following types of conditional statements: if statement executes code when a specified condition is true. if els

When you write code, you often need to complete different behaviors based on different conditions. You can use conditional statements in your code to accomplish this task.

In JavaScript, we can use the following conditional statements:

  • if statement

  • in a specified condition Execute code when established.

  • if...else statement

  • Execute code when the specified condition is true, and execute other code when the condition is not true.

  • if...else if....else statement

  • Use this statement to choose to execute one of several blocks of code.

  • switch statement

  • Use this statement to choose to execute one of several blocks of code.

If statement


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