How to replace all dots in a string using JavaScript ?
Last Updated : 24 May, 2024
We will replace all dots in a string using JavaScript. There are multiple approaches to manipulating a string in JavaScript.
Using JavaScript replace() Method
The string.replace() function is used to replace a part of the given string with another string or a regular expression. The original string will remain unchanged.
Syntax:
str.replace(A, B)
Example: Here we are replacing the dots(.) with space( ) in the text “A.Computer.science.Portal”.
javascript // Assigning a string let str = "A.Computer.science.Portal"; // Calling replace() function let res = str.replace(/\./g, " "); // Printing original string console.log("String 1: " + str); // Printing replaced string console.log("String 2: " + res); OutputString 1: A.Computer.science.Portal String 2: A Computer science Portal
Using JavaScript Split() and Join() Method
We can split up strings of text with the JavaScript split() method and join() method to join strings using the replace characters with the join method.
Syntax:
string.split('.').join(' ');Example: Here we are replacing the dots(.) with space( ) using split and join.
javascript // Assigning a string let str = "A.Computer.Science.portal"; // Calling split(), join() function let newStr = str.split(".").join(" "); // Printing original string console.log("String 1: " + str); // Printing replaced string console.log("String 2: " + newStr); OutputString 1: A.Computer.Science.portal String 2: A Computer Science portal
Using JavaSccript reduce() Method and spread operator
We can use the spread operator to make an array from the character of a string and form a string with the help of reduce() method without dots in the string.
Syntax:
[...str].reduce( (accum, char) => (char==='.') ? accum : accum + char , '')
Example: In this example, we will replace ( '.' ) by using the spread operator and reduce function.
JavaScript // Assigning a string let str = "Geeks.for.Geeks"; // using reduce(), and sprea operator let newStr = [...str].reduce( (s, c) => (c === "." ? s : s + c),"" ); // Printing original string console.log("String 1: " + str); // Printing replaced string console.log("String 2: " + newStr); OutputString 1: Geeks.for.Geeks String 2: GeeksforGeeks
Using JavaScript replaceAll() Method
JavaScript replaceAll() method returns a new string after replacing all the matches of a string with a specified string or a regular expression. The original string is left unchanged after this operation.
Syntax:
const newString = originalString.replaceAll(regexp | substr , newSubstr | function)
Example: This example uses the replaceAll() method to replace ( '.' ).
JavaScript let str = "Geeks.for.Geeks"; let replacedStr = str.replaceAll(".", ""); console.log("Original string : " + str); console.log("Modified string : " + replacedStr); OutputOriginal string : Geeks.for.Geeks Modified string : GeeksforGeeks
Using JavaScript for loop
We iterates over each character in the string using a for loop. If the current character is a dot ('.'), it appends the newChar character to the result; otherwise, it appends the current character from the input string. Finally, it returns the result string, which contains the replaced characters.
Example: This example uses the replaceAll() method to replace ( '.' ).
JavaScript const originalString = "Hi,.Welcome.to.GeeksforGeeks"; let replacedStr = ''; for (let i = 0; i < originalString.length; i++) { if (originalString[i] === '.') { replacedStr += ' '; } else { replacedStr += originalString[i]; } } console.log("Original string : " + originalString); console.log("Modified string : " + replacedStr);
Using JavaScript map() Method on Arrays
We can convert the string into an array of characters, use the map() method to iterate over each character, and replace dots with spaces. Finally, we join the array back into a string.
Example: In this example, we replace dots ('.') with spaces (' ') using the map() method.
JavaScript // Assigning a string let str = "Learning.is.fun.with.JavaScript"; // Using map() to replace dots with spaces let newStr = Array.from(str).map(char => char === '.' ? ' ' : char).join(''); // Printing original string console.log("String 1: " + str); // Printing replaced string console.log("String 2: " + newStr); OutputString 1: Learning.is.fun.with.JavaScript String 2: Learning is fun with JavaScript
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