if statement - Javascript - if/and/else not working -

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first off ... i'm new javascript ...

here's code i'm using, doesn't seem working properly. here's i'm trying accomplish ...

if has 'typeset' value of "complete set" , it's 'main' value "a2 tandem", it's title variable should "line set w/ alinks: ". if has other 'typeset' value or it's 'main' value "a2 tandem", it's title variable should "line set: "

what's happening: doesn't seem differentiating between 'main' value being "a2 tandem". still applying "w/ alinks: " title if 'main' value "a2 tandem".

help?

    if (acccat == "line sets"){         document.getelementbyid('o1').value = document.getelementbyid('main').value;         document.getelementbyid('o2').value = document.getelementbyid('mainsize').value;         document.getelementbyid('o3').value = document.getelementbyid('typeset').value;         document.getelementbyid('o4').value = document.getelementbyid('typeline').value;          var canopyvalue = document.getelementbyid('main').value;         var title;          if ((document.getelementbyid('typeset').value == "complete set") && (canopyvalue != "a2 tandem")){             title = "line set w/ alinks: ";         }else{             title = "line set: ";         } 

if (acccat == "line sets"){ //<-------- didn't close     document.getelementbyid('o1').value = document.getelementbyid('main').value;     document.getelementbyid('o2').value = document.getelementbyid('mainsize').value;     document.getelementbyid('o3').value = document.getelementbyid('typeset').value;     document.getelementbyid('o4').value = document.getelementbyid('typeline').value;      var canopyvalue = document.getelementbyid('main').value;     var title;      if ((document.getelementbyid('typeset').value == "complete set") && (canopyvalue != "a2 tandem")){         title = "line set w/ alinks: ";     }else{         title = "line set: ";     }

add } end of code.

also quick tip:

instead of typing document.getelementbyid("someid").value every single time, make function element.

var = function(id){     return document.getelementbyid(id); }

then can access get("o1").value = get("main").value


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