Scribd
Upload
9 views5 pages

Jscodes

The document contains a series of JavaScript code snippets that perform various string operations, including searching for a pattern, replacing substrings, splitting strings into components, checking for palindromes, generating Fibonacci series, counting vowels, finding duplicates in arrays, converting characters to Unicode, and inserting strings at specific positions. Each code snippet is accompanied by a brief description of its functionality. The examples demonstrate practical applications of JavaScript for string manipulation and array handling.

Uploaded by

Sairaj Lad
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
9 views5 pages

Jscodes

The document contains a series of JavaScript code snippets that perform various string operations, including searching for a pattern, replacing substrings, splitting strings into components, checking for palindromes, generating Fibonacci series, counting vowels, finding duplicates in arrays, converting characters to Unicode, and inserting strings at specific positions. Each code snippet is accompanied by a brief description of its functionality. The examples demonstrate practical applications of JavaScript for string manipulation and array handling.

Uploaded by

Sairaj Lad
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
You are on page 1/ 5

1.

Write a JavaScript that accepts a string and searches for the pattern “MSBTE” in the

given string. If the pattern is found, JavaScript will display that “Pattern is found” else

display “Pattern is not found: -

<script>

let a=prompt("Enter a String");

if(a.match("MSBTE"))

document.write("Pattern is found");

else

document.write("Pattern is not found");

</script>

2. Write a Java script that will replace following specified value with another value in a

string. String = “ I will fail” Replace “fail” by “pass”

<script>

let a="I will fail";

document.write(a.replace("fail","pass"));

</script>

3. Write JavaScript code to perform following operations on string. (Use split() method)

Input String : “Sudha Narayana Murthy” Display output as

First Name: Sudha

Middle Name: Narayana

Last Name: Murthy

<html>

<body>

<script>

let a="Sudha Narayana Murthy";

let b=a.split(" ");

document.write("First name:"+b[0]+"<br>");
document.write("Middle name:"+b[1]+"<br>");

document.write("Last name:"+b[2]);

</script>

</body>

</html>

4. Write a javascript function that accepts a string as a parameter and find the length of

the string.

<script>

function no(a)

document.write(a.length);

no("Sudha Narayana Murthy");

</script>

5. Write a javascript to checks whether a passed string is palindrome or not.

<script>

function checkPalindrome(string) {

const len = string.length;

for (let i = 0; i < len / 2; i++) {

if (string[i] !== string[len - 1 - i]) {

return 'It is not a palindrome';

return 'It is a palindrome';

const string = prompt('Enter a string: ');

const value = checkPalindrome(string);

document.write(value);

</script>

6. Write a javascript function to generate Fibonacci series till user defined limit.

<script>
var n1 = 0, n2 = 1, next_num, i;

var num = parseInt (prompt (" Enter the limit for Fibonacci Series "));

document.write( "Fibonacci Series: ");

for ( i = 1; i <= num; i++)

{ document.write (" <br> " + n1);

next_num = n1 + n2;

n1 = n2;

n2 = next_num;

</script>

7. Write a JavaScript function to count the number of vowels in a given string.

let a=prompt("Enter your name");

let b="aeiouAEIOU";

let count=0,char,char1;

for(let i=0;i<a.length;i++)

char=a[i];

for(let j=0 ;j<b.length;j++)

char1=b[j];

if(char==char1)

count=count+1;

document.write("Number of vowels in "+a+" are "+count);

</script>

8. Write a JavaScript that find and displays number of duplicate values in an array.
let a=["a","b","c","d","e"];

let b=["z","c","y","x","a"];

let c=[];

let count=0,char,char1;

for(let i=0;i<a.length;i++)

char=a[i];

for(let j=0;j<b.length;j++)

char1=b[j];

if(char==char1)

count++;

c.push(char1);

document.write("Duplicate Values: "+c+"<br>");

document.write("Count of Duplicate Values: "+count);

9. Develop JavaScript to convert the given character to Unicode and vice versa.

<script>

let unicodeValue = 65;

let character = String.fromCharCode(unicodeValue);

document.write(character);

let character1="A";

let unicodeValue1 = character1.codePointAt();

document.write("<br>"+unicodeValue1);

</script>

10. Write a JavaScript function to insert a string within a string at a particular position.

<script>

let str = "HowDoing";


let subStr = "areyou";

let pos = 3;

document.write(str.substr(0, pos) + subStr + str.substr(pos))

</script>

You might also like