The JavaScript string substr() method retrieves the part of the given string on the basis of the specified starting position and length. The original string will not be modified. Syntax: string.substr(position, length) Parameters: position: It represents the position of the string from where the string retrieves starts. length: It represents the number of characters to … Read more
The JavaScript string replace() method eliminates a given string with the specified replacement. By default, it will replace the first match only. To replace all matches we have to use a global identifier. Syntax: string.replace(string1, string2) Parameters: string1: It represents the string to be searched and replaced. string2: It represents the new string that will … Read more
The JavaScript string match() method determines a specified regular expression in a given string and returns that regular expression if a match occurs. Note: To get all the matches we have to use a global modifier. Syntax: string.match(regexp) Parameters: regexp: It represents the regular expression to be searched. Return: Matched regular expression. Example: <!DOCTYPE html> … Read more
The JavaScript string search() method determines a specified regular expression in a given string and returns its position if a match occurs. Syntax: string.search(regexp) Parameters: regexp: It represents the regular expression to be searched. Return: It will return the position of the regular expression if it is present in the string otherwise returns -1. Example: … Read more
The JavaScript string lastIndexOf() method retrieves the position of a char value present in the given string from the last position. Note: It is similar to indexOf(). The only difference is that lastIndexOf() returns the last index of a match instead of the first. Syntax 1: string.lastIndexOf(char) Syntax 2: string.lastIndexOf(ch,index) Syntax 3: string.lastIndexOf(str) Syntax 4: … Read more
The JavaScript string indexOf() method retrieves the position of a char value present in the given string. It is case-sensitive. Syntax 1: string.indexOf(char) Syntax 2: string.indexOf(ch,index) Syntax 3: string.indexOf(str) Syntax 4: string.indexOf(str,index) Parameters: char: It represents the specified char like “c”. str: It represents the specified string like “w3schools”. index: It represents the specified position … Read more
The JavaScript string concat() method retrieves a combination of two or more strings. Original strings will not be modified. Syntax: string.concat(string1,string2,…) Parameters: string1,string2,…: Represents the different strings to combined. Return: New string after the combination of strings. Example: <!DOCTYPE html> <html> <body> <script> document.writeln(“HELLO”.concat(” WORLD!”)); </script> </body> </html>
The JavaScript string charCodeAt() method retrieves the Unicode value of a character present at the specified index. Index can be from 0 to n-1 where n is the size of the string. It will return an integer value between 0 and 65535. Syntax: string.charCodeAt(index) Parameters: index: It represents the specified position of a character. Return: … Read more
The JavaScript string charAt() method retrieves the char value present at the specified index. If n is the size of the string then the index can be from 0 to n-1. Syntax: String.charAt(index) Parameters: index: It represents the specified position of a character. Return: Char value present at the specified index. Example 1: <!DOCTYPE html> … Read more
The JavaScript Set values() method gives an object of Set iterator that contains the values for each element. It is similar to the keys() method of Map. Syntax: setObj.values() Return: Iterator object. Example: <!DOCTYPE html> <html> <body> <script> var jewels = new Set(); jewels.add(“DIAMOND”).add(“GOLD”).add(“PLATINUM”).add(“SILVER”); var gems =jewels.values(); document.writeln(gems.next().value+”<br>”); document.writeln(gems.next().value+”<br>”); document.writeln(gems.next().value+”<br>”); document.writeln(gems.next().value); </script> </body> </html>