JavaScriptPractice/error.html at main · EduKeyPath/JavaScriptPractice · GitHub

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<!DOCTYPE html>
<htmllang="en">
<head>
<metacharset="UTF-8">
<title>demo</title>
</head>
<body>
<pid="demo"></p>

<inputtype="text" value="" id="fld" />
<buttononclick="btn()">Click</button>
<pid="demo2"></p>

<pid="demo3"></p>

<script>
try{
adddalert('Hello');
}
catch(test){
document.getElementById('demo').innerHTML=test.message;
}


functionbtn(){
vartxV=document.getElementById('fld').value;
try{
if(txV=='')throw'Fill the text box';
if(isNaN(txV))throw'not a number';
if(txV>20)throw'give low number';
if(txV<5)throw'give high number';
}
catch(errMsg){
document.getElementById('demo2').innerHTML=errMsg;
}
finally{
document.getElementById('fld').value='';
}

}


/*function btn(){
 var fldV = document.getElementById('fld').value;
 try {
 if(fldV == '') throw 'Fill text';
 if(isNaN(fldV)) throw 'not number';
 fldV = Number(fldV);
 if(fldV < 5) throw 'too low';
 if(fldV > 15) throw 'too high';
 }
 catch (err){
 document.getElementById('demo2').innerHTML = err;
 }
 }*/

</script>


</body>
</html>