But we can make a new string based on the existing one, with the uppercased first character: let newStr = str[0].toUpperCase() + str.slice(1); There’s a small problem though.
The localeCompare () method returns a number indicating whether the string comes before, after or is equal as the compareString in sort order. String insensitive sorts JavaScript performance comparison.
Be careful with [].sort method.

Browser Support. If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: help@w3schools.com. javascript sort string (4) I'm working on a JavaScript (jQuery's OK too if this needs it, but I doubt it will) function to alphabetize a string of letters. But with JavaScript, methods and properties are available because it treats primitive values as objects. new RegExp (" regexp ", "i") JavaScript RegExp Object. April 10, 2013 at 6:29 PM Hi Chris! You can try to run the following code to compare two strings. According to Firefox Intl.Collator is faster when comparing large numbers of strings. Tip: Use the ignoreCase property to check whether or not the "i" modifier is set. A primitive value such as "Yas" doesn't have any methods or properties, mainly because it's not an object. Technical Details. string.localeCompare. Let's say the string that I want to sort is: "ACBacb".

The call str.localeCompare(str2) ... We can’t “replace” the first character, because strings in JavaScript are immutable. multiple - How do you sort letters in JavaScript, with capital and lowercase letters combined? JS: Sort a JavaScript object by key in alphabetical order case insensitive. How do I perform case insensitive string comparison in JavaScript? By default, the JavaScript Array.sort function converts each element in the array that needs to be sorted into a string, and compares them in Unicode code point order. Example. / JavaScript W3cubTools Cheatsheets About. Stack Overflow Public questions and answers; Teams Private questions and answers for your team; Enterprise Private self-hosted questions and answers for your enterprise; Jobs Programming and related technical career opportunities; Talent Hire technical talent; Advertising Reach developers worldwide Revision 2 of this test case created by Chris Sullins on 2015-1-24. The i modifier is used to perform case-insensitive matching.

Thanks to Arne Martin Aurlien and Ivan Krechetov for inspiration. Browser Support. 1.JavaScript string contains substring check using includes method (in ES6): The string to compare with. For each method you can customize the location. To check for case-insensitive Javascript string contains or Javascript string contains after some index, go through the complete tutorial. How to perform case-insensitive sorting in JavaScript? To compare two strings in JavaScript, use the localeCompare() method. JavaScript String - localeCompare() Method - This method returns a number indicating whether a reference string comes before or after or is the same as the given string in sorted order. In JavaScript, localeCompare() is a string method that is used to compare two strings and return a numeric value indicating which string comes first in the sort order based on locale. ; So when you are working with arrays of strings in a language other than English, remember to use this method to avoid unexpected sorting. #snippet - sortObj.js #N#localeCompare () string .localeCompare ( compareString) Parameter Values. Live Demo The localeCompare() method returns a number indicating whether a reference string comes before or after or is the same as the given string in sort order. Let's have a look at the simplest method you have most definitely used: String length The length property returns the length of a string: Description . javascript - localecompare - lodash case insensitive sort .

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