elseif syntax in JavaScript

Question

How can I achieve an elseif in a JavaScript condition

User · Answer

Conditional statements are used to perform different actions based on different conditions.

Use if to specify a block of code to be executed, if a specified condition is true

Use else to specify a block of code to be executed, if the same condition is false

Use else if to specify a new condition to test, if the first condition is false

User · Answer

You are missing a space between else and if   It should be else if instead of elseif  if condition        else if condition       else

User · Answer

x   10  if x  gt  100   console log  over 100   else if  x  gt  90   console log  over 90   else if  x  gt  50   console log  over 50   else if  x  gt  9   console log  over 9   else console log  lower 9

User · Answer

Just add a space   if            else if            else

User · Answer

You could use this syntax which is functionally equivalent   switch  true      case condition1         e g  if  condition1     true       break    case condition2         e g  elseif  condition2     true       break    default         e g  else     This works because each condition is fully evaluated before comparison with the switch value  so the first one that evaluates to true will match and its branch will execute  Subsequent branches will not execute  provided you remember to use break   Note that strict comparison is used  so a branch whose condition is merely  truthy  will not be executed  You can cast a truthy value to true with double negation    condition

User · Answer

Actually  technically when indented properly  it would be    if  condition              else       if  condition                      else                         There is no else if  strictly speaking     Update  Of course  as pointed out  the above is not considered good style

User · Answer

if   100  lt  500          any action   else if   100  gt  500         any another action     Easy  use space

User · Answer

In JavaScript s if-then-else there is technically no elseif branch  But it works if you write it this way  if  condition       else if  other condition       else       To make it obvious what is really happening you can expand the above code using an additional pair of   and    if  condition       else       if  other condition          else             In the first example we re using some implicit JS behavior about    uses  We can omit these curly braces if there is only one statement inside  Which is the case in this construct  because the inner if-then-else only counts as one statment  The truth is that those are 2 nested if-statements  And not an if-statement with 2 branches  as it may appear on first sight  This way it resembles the elseif that is present in other languages  It is a question of style and preference which way you use it

[javascript] "elseif" syntax in JavaScript

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