Conditional Statements

In JavaScript we have the following conditional statements:

}if statement - use this statement to execute some code only if a specified condition is true

}if...else statement - use this statement to execute some code if the condition is true and another code if the condition is false

}if...else if....else statement - use this statement to select one of many blocks of code to be executed

}switch statement - use this statement to select one of many blocks of code to be executed

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If Statement Syntax:

if (condition)
  {
  code to be executed if condition is true
  }

If...else Statement Syntax:

if (condition)
  {
  code to be executed if condition is true
  }
else
  {
  code to be executed if condition is not true
  }

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If...else if...else Statement Syntax:

if (condition1)
  {
  code to be executed if condition1 is true
  }
else if (condition2)
  {
  code to be executed if condition2 is true
  }
else
  {
  code to be executed if neither condition1 nor condition2 is true
  }

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The JavaScript Switch Statement Syntax:

switch(n)
{
case 1:
  execute code block 1
  break;
case 2:
  execute code block 2
  break;
default:
  code to be executed if n is different from case 1 and 2
}