How do I test if a variable does not equal either of two values

Question

I want to write an if else statement that tests if the value of a text input does NOT equal either one of two different values  Like this  excuse my pseudo-English code     var test       test   val    if  test does not equal A or B       do stuff    else       do other stuff      How do I write the condition for the if statement on line 2

User · Answer

May I suggest trying to use in else if statement in your if/else statement. And if you don't want to run any code that not under any conditions you want you can just leave the else out at the end of the statement. else if can also be used for any number of diversion paths that need things to be a certain condition for each.

if(condition 1){

} else if (condition 2) {

}else {

}

User · Answer

var test       test   val    if  test     A   amp  amp  test     B        do stuff    else       do other stuff

User · Answer

This can be done with a switch statement as well  The order of the conditional is reversed but this really doesn t make a difference  and it s slightly simpler anyways     switch test        case A      case B          do other stuff          break      default          do stuff

User · Answer

You used the word  or  in your pseudo code  but based on your first sentence  I think you mean and  There was some confusion about this because that is not how people usually speak   You want   var test       test   val    if  test      A   amp  amp  test      B        do stuff    else       do other stuff

User · Answer

ECMA2016 Shortest answer  specially good when checking againt multiple values   if     A   B        includes test

User · Answer

In general it would be something like this   if test     A   amp  amp  test     B     You should probably read up on JavaScript logical operators

User · Answer

I do that using jQuery  if   0  gt    inArray  test   a b

User · Answer

Think of    negation operator  as  not       boolean-or operator  as  or  and  amp  amp   boolean-and operator  as  and   See Operators and Operator Precedence   Thus   if   a    b          means neither a nor b     However  using De Morgan s Law  it could be written as   if  a  amp  amp   b         is not a and is not b     a and b above can be any expression  such as test     B  or whatever it needs to be    Once again  if test     A  and test     B   are the expressions  note the expansion of the 1st form      if   a    b    if    test     A       test     B        or more simply  removing the inner parenthesis as       and  amp  amp  have a lower precedence than comparison and negation operators if   test     A     test     B       and using DeMorgan s  we can turn this into    this is the same as substituting into if  a  amp  amp   b  if   test     A    amp  amp    test     B       and this can be simplified as   x    y  is the same as  x    y  if test     A   amp  amp  test     B

[javascript] How do I test if a variable does not equal either of two values?

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