![]() ![]() If the last character is not a number, it will not replace. Str.replace( /\d$/, '') // Masteringjs.io let str2 = 'Masteringjs.io0F' TypeScript Array Methods shift(), Removes and returns the first element of the array splice(), Adds or removes elements from the array unshift(), Adds one or. With replace(), you can specify if the last character should be removed depending on what it is with a regular expression.įor example, suppose you want to remove the last character only if the last character is a number. Str.replace( /.$/, '') // Masteringjs.io Advanced Features The splice() method changes the contents of an array by removing or replacing existing elements and/or adding new elements and returns the removed item(s). Str.substr( 0, str.length - 1) // Masteringjs.io Splice replaces, adds, or subtracts values from the original array and then returns. ![]() Str.substring( 0, str.length - 1) // Masteringjs.io Slice returns a portion of the array but has no impact on the entire array. replace(/.$/, '') replaces the last character of the string with an empty string. Lets take a look at the following example. Using /.$/ as the regular expression argument matches the last character of the string, so. 1 Firstly, it's not doing anything because your for loop end condition should be checking the loop parameter x against the length of the ans array, i.e. The splice() method changes the original array and returns an array that contains the deleted elements. The Javascript splice() method can be complex to use, especially when you need to add or remove multiple elements at. The following are the disadvantages of using the Javascript splice() method. Disadvantages of the Javascript Splice Method. Replace() takes either a string or a regular expression as its pattern argument. The Javascript splice() method also provides us with a way to return the array of removed elements. Substring() does not have negative indexing, so be sure to use str.length - 1 when removing the last character from the string. Slice() is generally easier, however other methods available are substring() and replace(). ![]() Str.slice( 0, -1) // Masteringjs.io Alternative Methods Slice() supports negative indexing, which means that slice(0, -1) is equivalent to slice(0, str.length - 1). It takes two arguments: the start index and the end index. To remove the last character from a string in JavaScript, you should use the slice() method. ![]()
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