How to Convert Special Characters to HTML in JavaScript? Last Updated : 10 Oct, 2024 Summarize Comments Improve Suggest changes Share Like Article Like Report In JavaScript, special characters like less-than (<), greater-than (>), and others can cause rendering issues in HTML because they are interpreted as tags. To display these characters correctly in HTML, it's necessary to convert them into their respective HTML entities. This process prevents the browser from misinterpreting them as HTML tags. JavaScript can be used to automate the conversion of special characters into safe HTML entities, ensuring proper rendering of text that includes symbols like <, >, &, and others.Example: This example is an illustration of the problem caused when the HTML text is not converted to the special format. HTML <!DOCTYPE html> <html> <head> </head> <body> <div> If b<a and a<h then b<h. <!-- the browser understands it as anchor tag--> </div> </body> </html> The part b<a is problematic. The browser understands it as anchor tags. Similar is the case with b<hOutput:If bSolution 1:One way to solve it is to manually by putting special symbols in the pace of the respective special character which is problematic. But for very heavy websites it is very difficult to draw all the characters and then render it in HTML. HTML <!DOCTYPE html> <html> <head> </head> <body> <div> If b < a and ab < h then b < h. <!-- the browser understands it as less than--> </div> </body> </html> Output:If b < a and ab < h then b < h.JavaScript based Solution:One another way is to convert each special character to its respective HTML code using javascript. Within the script we will replace all the special charters with the help of a regular expression which is "&#" + ASCII value of character + ";". We apply the same rule with all the text on the page. HTML <!DOCTYPE html> <html> <head> </head> <body> <script> function Encode(string) { let i = string.length, a = []; while (i--) { let iC = string[i].charCodeAt(); if (iC < 65 || iC > 127 || (iC > 90 && iC < 97)) { a[i] = '&#' + iC + ';'; } else { a[i] = string[i]; } } return a.join(''); } </script> <script> document.write(Encode("If b<a and a<h then b<h")); </script> </body> </html> Output:If b<a and a<h then b<h Comment More infoAdvertise with us Next Article How to Convert Special HTML Entities Back to Characters in PHP? P piyush25pv Follow Improve Article Tags : JavaScript Web Technologies Similar Reads How to Convert Special HTML Entities Back to Characters in PHP? Sometimes, when we work with HTML in PHP, you may encounter special characters that are represented using HTML entities. These entities start with an ampersand (&) and end with a semicolon (;). For example, < represents <, > represents >, and & represents &. To co 1 min read How to convert Unicode values to characters in JavaScript ? The purpose of this article is to get the characters of Unicode values by using JavaScript String.fromCharCode() method. This method is used to return the characters indicating the Unicode values. Description: Unicode is a character encoding standard that assigns a unique number to every character, 2 min read How to escape & unescape HTML characters in string in JavaScript? Escaping and unescaping HTML characters is important in JavaScript because it ensures proper rendering of content, preventing HTML injection attacks and preserving text formatting when displaying user-generated or dynamic content on web pages. Escape HTML Characters< : <> : >" : 3 min read How to convert hyphens to camel case in JavaScript ? Given a string containing hyphens (-) and the task is to convert hyphens (-) into camel case of a string using JavaScript. Approach: Store the string containing hyphens into a variable.Then use the RegExp to replace the hyphens and make the first letter of words upperCase. Example 1: This example co 2 min read How to Convert Integer to Its Character Equivalent in JavaScript? In this article, we will see how to convert an integer to its character equivalent using JavaScript. Method Used: fromCharCode()This method is used to create a string from a given sequence of Unicode (Ascii is the part of Unicode). This method returns a string, not a string object. JavaScript let s 2 min read How to convert character to ASCII code using JavaScript ? The purpose of this article is to get the ASCII code of any character by using JavaScript charCodeAt() method. This method is used to return the number indicating the Unicode value of the character at the specified index. Syntax: string.charCodeAt(index); Example: Below code illustrates that they ca 1 min read Like