How to find and remove duplicates in a JavaScript arrayIf you want to remove the duplicates, there is a very simple way, making use of the Set data structure provided by JavaScript. It’s a one-liner:const yourArrayWithoutDuplicates = [...new Set(yourArray)]...
'hello javascript'.includes('javascript') // output: true Before ES6:If you don’t wish to use includes you can go with good old indexOf method. 'hello javascript'.indexOf('javascript') !== -1 // output: true indexOf will return starting index of the substring, if it is ...
In the body of the else statement, return a recursive call to the current method with a substring of the method’s string parameter, starting from the second character i.estr.substr(1). Append the first letter of the new substring e.g. else return reverseString(str.substr(1)) + str.ch...
Learn how to convert a string to a number using JavaScriptJavaScript provides various ways to convert a string value into a number.Best: use the Number objectThe best one in my opinion is to use the Number object, in a non-constructor context (without the new keyword):...
JavaScriptreplace()Method to Remove Specific Substring From a String Thereplace()function is a built-in function in JavaScript. It replaces a part of the given string with another string or a regular expression. It returns a new string from a given string and leaves the original string unchang...
Strings are everywhere in JavaScript, a sequence of characters that allows you to combine or make statements. With it (as an object) comes different
In the third example, we are passing 2 as the second argument, limiting the resulting substring array to two elements. In the last example, we are reversing the string using the built-in reverse() method. Because reverse() is an array method, we'll first split the original string into ...
1) Using the indexOf and substring Methods 2. Splitting and Joining 3. Regular Expressions Examples and Explanation Example 1: Example 2: Conclusion The Exact Solution To remove the first comma from a string in JavaScript, we can make use of thereplace()method along with a regular expression...
The slice method, in this case, returns an empty string. The substring method treats both arguments as 0 if any of the arguments are negative or NaN.slice also treats NaN arguments as 0. But when negative values are passed, it counts down from the end of the string to find the...
You can use JavaScript's substring or slice methods to extract substrings after specific characters or patterns. Q: How to extract numbers from a string in Excel? You can use the combination of the MID, FIND, and ISNUMBER functions in Excel to extract numbers from a string. ...