CODEWITHSUNDEEP
javascriptfunctionif-statementboolean
Ohad
Ohad

Reputation: 17

JS if statment inside function

i need help please, im trying to check "if" condition inside a function and print it to the input field but i always get false, why this if statement inside the function always return false? and how can i fix it, Thanks.

<body>

    <label>Value1:</label>
    <input id='v1' type="number"><br><br>

    <label>Value2:</label>
    <input id='v2' type="number"><br><br>

    <label>Value3:</label>
    <input id='v3' type="number"><br><br>

    <button onclick="calculateTriangle()">Answer</button>
    <input id='ans'><br><br>

    <script>

    function calculateTriangle() {

        var V1 = document.getElementById('v1').value;
        var V2 = document.getElementById('v2').value;
        var V3 = document.getElementById('v3').value;
        console.log(V1);
        console.log(V2);
        console.log(V3);
        var an = Triangle(V1,V2,V3)
        document.getElementById('ans').value=an;

        }

    function Triangle(a,b,c){

        if (a+b>c && a+c>b && b+c>a){
            return true;
            }
            return false;

            }


    </script>
</body>

Upvotes: 1

Views: 75

Answers (2)

RZS
RZS

Reputation: 1

if (a+b>c && a+c>b && b+c>a){
    return true;
} else {
    return false;
}

Upvotes: 0

Sajeeb Ahamed
Sajeeb Ahamed

Reputation: 6390

Parse your input values as an integer. Use these lines of code instead of yours. The values from your input fields are string.

So when you check a + b > c it concatenates a + b. Say you put a = 1 and b = 2 then it makes a + b = 12 instead of 3. 

 var V1 = parseInt(document.getElementById('v1').value);
 var V2 = parseInt(document.getElementById('v2').value); 
 var V3 = parseInt(document.getElementById('v3').value);

Upvotes: 1

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