Table of Contents
Ceil
5
<script> a=4.01; b=Math.ceil(a);
document.write(b);
</script>
Charat
9
var str = "9971486942";
var charPosition = 9;
if (charPosition >= 0 && charPosition < str.length) {
var char = str.charAt(charPosition - 1);
document.write(char);
} else {
document.write("Position out of range");
}
Charcode
A
<script> var res = String.fromCharCode(65);
document.write(String.fromCharCode(65));
document.write("<br>"+res); </script>
CharCodeAt
65
90
<script> var str="A";
var str1="Z"; document.write(str.charCodeAt(0)+"<br>");
document.write(str1.charCodeAt(0));
<!--code of specific character -->
</script>
Concatenate
sanjayjain
sanjay jain
<script>
var a="sanjay";
var b="jain";
var c=a.concat(b);
document.write(c+"<br>");
var d=a+" "+b; document.write(d);
</script>
Floor
4
<script>
a=4.999999;
b=Math.floor(a);
document.write(b);
</script>
IndexOf
2
<script>
var str="aj@ay";
document.write(str.indexOf("@"));
</script>
LastIndexOf
12
<script>
var str="sanjay kumar jain";
document.write(str.lastIndexOf(" "));
</script>
length
8
<script>
var mob="abcdefgh";
var a=mob.length; document.write(a+"<br>");
</script>
Lower case
hello world!
<script>
var txt="Hello world!";
document.write(txt.toLowerCase());
</script>
Not a Number
plz enter (a-z)
<script>
var txt=123;
if(isNaN(txt)){ document.write("correct");
}else{ document.write("plz enter(a-z)");
} </script>
PI
3.141592653589793
<script>
c=Math.PI;
document.write(Math.PI);
</script>
Round
4
<script>
a=4.49999999;
b=Math.round(a);
document.write(b);
</script>
Upper case
HELLO WORLD!
<script>
var txt="Hello world!";
document.write(txt.toUpperCase());
</script>
