ICT Solutions
22 Jun 2022, 09:35:47
Category : JavaScript Tutorials
Throw Statement (JS Errors)
<!DOCTYPE html>
<html>
<head>
<title>JavaScript Code Testing</title>
</head>
<body>
<input id = "demo" type = "text">
<button type = "button" onclick = "jsFun()">Check Input</button>
<p id = "page"></p>
<script>
function jsFun(){
var sms, x;
sms = document.getElementById("page");
sms.innerHTML = "";
x = document.getElementById("demo").value;
try{
if(x == "") throw "empty.";
if(isNaN(x)) throw "not a number.";
x = Number(x);
if(x < 5) throw "too small.";
if(x > 10) throw "too big.";
if(x > 4 && x < 11) throw "OK.";
}
catch (err){
sms.innerHTML = "The input is " + err;
}
}
</script>
</body>
</html>
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