javascript - (JQuery) Use of word or phrase in textbox triggers action -

i have working jquery looks phrase , trigger:

$("#id_message").on('keyup', function(){     if($('#id_message').val().tolowercase().indexof('foo foo') > -1){         doegg();     } }); 

however love able expand list of words or phrases. have separate list this, assume need in array?

var phraselist = [     "foo foo",     "foobar",     "fooby foo foobar" ]; 

how can search word list? imagine list having maybe 5 phrases or so. , if user types "i foo foo" or "i love @ foobar" should still trigger textbox contains words list.

also added problem, have script undoes function if user decides delete phrase:

$("#id_message").on('keyup', function(){     if($('#id_message').val().tolowercase().indexof('foo foo') == -1){         undoegg();     } }); 

edit #1

the closest answer have found comes @nixful-autistic:

$("#id_message").on('keyup', function(){     for(var i=0;i<phraselist.length;i++){         if($('#id_message').val().tolowercase().indexof(phraselist[i]) > -1){             doegg();         }     } }); 

edit #2

i believe know problem is!

the value of .indexof textbox set -1 works way through characters til finds word or phrase phraselist array...and assigns value > -1.

so whenever there keyup event, value of indexof set -1 until can find 1 of words of phrases. causes doegg() , undoegg() functions called , uncalled in quick succession repeatedly.

so think need way scan through whole textbox before assigning .indexof value.

is possible?

$("#id_message").on('keyup', function(){    for(var i=0;i<phraselist.length;i++){      if($('#id_message').val().tolowercase().indexof(phraselist[i]) > -1){          doegg();      }    }  });

update

i wish suggestion

$("#id_message").on('keyup', function(){            for(var i=0;i<phraselist.length;i++){              if($('#id_message').val().tolowercase().indexof(phraselist[i]) > -1){                  doegg();              }else{                  undoegg();               }            }  });

update 2 try declare these variables outside function

var change; var changeback;

function doegg(){     if(changeback)clearinterval(changeback); //if changeback isrunning     audioelement.play();     //var change = setinterval(function () {     change = setinterval(function () {             ... }  function undoegg(){     if(change)clearinterval(change); //if change isrunning     audioelement.pause();     //var changeback = setinterval(function () {    changeback = setinterval(function () {             ... }