How to usethe reduce() Method in Javascript
The reduce() method can be used to iterate over each character in the string, accumulate only the alphanumeric characters, and construct the resulting string.
Example:
function removeFunction(inputString) {
return inputString.split('').reduce((acc, char) => {
return /[a-zA-Z0-9]/.test(char) ? acc + char : acc;
}, '');
}
const originalString = "Hello! This is 123 a test string.";
const result = removeFunction(originalString);
console.log(result); // Output: HelloThisis123ateststring
Output
HelloThisis123ateststring
JavaScript Program to Remove Non-Alphanumeric Characters from a String
We will see how to remove non-alphanumeric characters from a string in JavaScript. Non-alphanumeric characters are symbols, punctuation, and whitespace. Removing them from a string This task can be useful when you want to clean up user inputs, sanitize strings, or perform various text processing operations.
There are multiple approaches to removing non-alphanumeric characters from a string in JavaScript.
Table of Content
- Approach 1: Using Regular Expressions
- Approach 2: Using a Loop and Character Checking
- Approach 3: Using the replace() Method with a Custom Function
- Approach 4: Using Array Filter and Regular Expression
- Approach 5: Using the reduce() Method
- Approach 6: Using Array Map and Join
We will explore all the above methods along with their basic implementation with the help of examples.
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