JavaScriptPractice/es6.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>
<pid="demo1"></p>
<script>
varx=55;
vary=55.5;
varxx=Number.isInteger(x);
varyy=Number.isInteger(y);
document.querySelector('#demo').innerHTML=xx;
document.querySelector('#demo1').innerHTML=yy;
</script>

<pid="demo2"></p>
<pid="demo3"></p>
<script>
vara="55";
varb="John";
varaa=isNaN(a);
varbb=isNaN(b);
document.querySelector('#demo2').innerHTML=aa;
document.querySelector('#demo3').innerHTML=bb;
</script>

<pid="demo4"></p>
<pid="demo5"></p>
<script>
varc=100/10;
vard=10/0;
varcc=isFinite(c);
vardd=isFinite(d);
document.querySelector('#demo4').innerHTML=cc;
document.querySelector('#demo5').innerHTML=dd;
</script>

<pid="demo6"></p>
<pid="demo7"></p>
<script>
varx=function(firstname,lastname){
returnfirstname+' '+lastname;
}
document.getElementById('demo6').innerHTML=x('John','Shaw');

constba=(first,last)=>first+last;
document.getElementById('demo7').innerHTML=ba('Bably','Shaw');
</script>


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</body>
</html>