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  • Compare two numbers

    @dennisse718
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    Answer it

    Can you tell me why this isn't working with comparing numbers?? All assistance is truly & greatly appreciated.

    function init(){ var a = document.getElementById("a").value; var b = document.getElementById("b").value; var compare = document.getElementById("comparison"); var submit = document.getElementById("submit");

    submit.onClick = function() {
    WhoWins(a,b);
}

function WhoWins(a, b) {
    if(a === b){
        displayResults = "=";
    }else if(a > b){
        displayResults = ">";
    }else if(a < b){
        displayResults = "<";
    }

function displayResults() {
    output.innerHTML = compare;
}

}

    }

    window.onload = function(){ init(); }

    Javascript Compare two dates with JavaScript.
    Answer it

 2 Answer(s)

  • @sergey.kurdyukov.v
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    over 7 years ago

     var a = document.getElementById("a").value

    As far as I understand, when you get a value you get a string but then you try to compare 2 strings (not numbers). So, if you want to get more correct comparison you need to cast your strings to integer:  a = Number(a);
  • @pooja.panwar
    Recommendations Offline Message

    almost 10 years ago

    Hi, You are passing value in displayResults function in a wrong way. Your code should be like this:

    var a = document.getElementById("a").value; 
var b = document.getElementById("b").value; 
var compare = document.getElementById("comparison"); 
var submit = document.getElementById("submit");
submit.onClick = function() {
WhoWins(a,b);
}
function WhoWins(a, b) {
if(a === b){
displayResults ("=");
}else if(a > b){
displayResults (">");
}else if(a < b){
displayResults ("<");
}
function displayResults(result) {
compare.innerHTML = result;
}

    I hope it will give you expected result in field with compare id.

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