Tutorial Gateway

  • C
  • C#
  • Java
  • Python
  • SQL
  • MySQL
  • Js
  • BI Tools
    • Informatica
    • Talend
    • Tableau
    • Power BI
    • SSIS
    • SSRS
    • SSAS
    • MDX
    • R Tutorial
    • Alteryx
    • QlikView
  • More
    • C Programs
    • C++ Programs
    • Go Programs
    • Python Programs
    • Java Programs

JavaScript CharCodeAt

by suresh

The JavaScript CharCodeAt function is used to return the Unicode of the Character at a specified index position. The syntax of the CharCodeAt function is

String_Object.CharCodeAt(Index_Position)

JavaScript ChartCodeAt Function returns the Unicode of the Character from String_Object at specified Index_Position. If we specify the Index position out of range, then the ChartCodeAt() Function returns NaN.

JavaScript CharCodeAt Example

The following set of examples help you understand the ChartCodeAt Function in JavaScript Programming language.

<!DOCTYPE html>
<html>
<head>
    <title> JavaScript CharCodeAt </title>
</head>
<body>
    <h1>JavaScript CharCodeAt </h1>
    <p id= "Content1">Content 1</p>
    <p id= "Content2">Content 3</p>
    <p id= "Content3">Content 2</p>
<script>
 var Str_Original = "Tutorial GateWay";
 var Str_Extracted = Str_Original.charCodeAt(9);
 var Str_Extracted1 = Str_Original.charCodeAt(Str_Original.length - 1);
 var Str_Extracted2 = Str_Original.charCodeAt(Str_Original.length);
    
 document.getElementById("Content1").innerHTML = "Charcter at Index position 9 = " + Str_Extracted;
 document.getElementById("Content2").innerHTML = "Charcter at Index position 15 = " + Str_Extracted1; 
 document.getElementById("Content3").innerHTML = "Charcter at Index position 16 = " + Str_Extracted2; 
</script>
</body>
</html>
JavaScript CharCodeAt

The following JavaScript charcodeat statement finds the Character Unicode at index position 9, and it will be G.

var Str_Extracted = Str_Original.charCodeAt(9);

NOTE: You should count the space as One Character in JS CharCodeAt.

In the next line, we are using the JavaScript len function to calculate the string length.

var Str_Extracted1 = Str_Original.charCodeAt(Str_Original.length - 1);

In the above statement, we are subtracting 1 from string length. Because the length of a Str_Original is 16, and there is no character at index position 16. Let us see, what will happen when we select 16 in JavaScript charcodeat

var Str_Extracted2 = Str_Original.charAt(Str_Original.length);

From the above screenshot, you can observe that it returned NaN.

Placed Under: JavaScript

  • SQL DML, DDL, DCL & TCL Cmds
  • SQL NOT EXISTS Operator
  • SQL UPDATE from SELECT
  • SQL AFTER UPDATE Triggers
  • SQL Get Column Names in Table
  • SQL IF ELSE
  • SQL ACID Properties
  • SQL FOR XML PATH
  • Java Two Dimensional Array
  • Java Perfect Number Program
  • Java Count Digits in a Number
  • C Compare Two Strings Program
  • C Print Prime Numbers 1 to 100
  • C program to Reverse a String
  • C Palindrome Number Program
  • C Program for Palindrome String
  • C Remove Duplicate String Chars
  • C Square of a Number Program
  • C Sum and Average of N Number
  • Python Fibonacci Series program
  • Python Area Of Circle Program
  • Python Prime Numbers 1 to 100
  • Python Program for Leap Year
  • Tableau Rank Calculation
  • Tableau Google Maps usage
  • Power BI Format Dates
  • Power BI Top 10 Filters
  • Power BI – Create Hierarchy
  • Power BI DAX Math Functions
  • Learn SSIS in 28 Days
  • SSIS Transformations
  • SSIS Incremental Load
  • SSRS Drill Through Reports
  • SSRS Drill Down Reports
  • R Programming Tutorial

Copyright © 2021 · All Rights Reserved by Suresh

About Us | Contact Us | Privacy Policy