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main.js
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main.js
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var angle1 = document.querySelector("#angle1");
var angle2 = document.querySelector("#angle2");
var angle3 = document.querySelector("#angle3");
var btnIsTriangle = document.querySelector("#btn-is-triangle");
var output = document.querySelector("#is-triangle-output");
btnIsTriangle.addEventListener("click", isTriangle);
function validateNumber(str) {
return !isNaN(str) && str.trim().length > 0;
}
function isTriangle() {
output.style.display = "inline-block";
var angle1Val = angle1.value;
var angle2Val = angle2.value;
var angle3Val = angle3.value;
if (
validateNumber(angle1Val) &&
validateNumber(angle2Val) &&
validateNumber(angle3Val)
) {
if (
Number(angle1Val) > 0 &&
Number(angle2Val) > 0 &&
Number(angle3Val) > 0
) {
if (Number(angle1Val) + Number(angle2Val) + Number(angle3Val) === 180) {
output.style.color = "green";
output.innerText = "Yayy!! They make a triangle";
} else {
output.style.color = "red";
output.innerText = "Oops!! the angles don't make a triangle";
}
} else {
output.innerText = "INVALID INPUT";
}
} else {
output.innerText = "INVALID INPUT";
}
}