Web Front-end
JS Tutorial
How does the provided JavaScript function implement natural sorting of an array of strings containing numbers?
How does the provided JavaScript function implement natural sorting of an array of strings containing numbers?
Nov 11, 2024 pm 09:11 PM
Natural Sorting of Array Elements (String with Numbers)
Sorting an array of strings that contain numbers in a meaningful way can be challenging. Sorting them lexicographically often results in an unexpected order. To achieve the desired "natural sort" order, we can use the following approach:
Solution:
The provided JavaScript function uses a custom compare function called naturalCompare. Here's how it works:
-
Tokenize Strings:
- This function Tokenizes the input strings, separating numbers from characters. Tokens are stored as pairs in an array, where the first element is the number (or Infinity if no number), and the second element is the non-numeric characters.
-
Comparison Loop:
- It enters a loop that iterates over the tokens of the two input strings.
- In each iteration, it compares the first element (number) or the second element (characters) of the token pairs.
- If one is greater, the function returns the comparison result (positive for a, negative for b). If they are equal, it continues to the next pair.
-
Handling Unequal Token Length:
- If there are still elements in one of the tokens arrays, their length difference is returned as the comparison result.
Example:
Here's an example of using this approach to sort the array:
<br>function naturalCompare(a, b) {</p>
<pre class="brush:php;toolbar:false">// Tokenization
var ax = [], bx = [];
a.replace(/(\d+)|(\D+)/g, function(_, , ) { ax.push([ || Infinity, || ""]) });
b.replace(/(\d+)|(\D+)/g, function(_, , ) { bx.push([ || Infinity, || ""]) });
// Comparison
while(ax.length && bx.length) {
var an = ax.shift();
var bn = bx.shift();
var nn = (an[0] - bn[0]) || an[1].localeCompare(bn[1]);
if(nn) return nn;
}
// Handling unequal length
return ax.length - bx.length;
}
// Sorting test array
let arr = ["IL0 Foo", "PI0 Bar", "IL10 Baz", "IL3 Bob says hello"];
arr.sort(naturalCompare);
console.log(arr);
Output:
[
"IL0 Foo",
"IL3 Bob says hello",
"IL10 Baz",
"PI0 Bar"
]
The above is the detailed content of How does the provided JavaScript function implement natural sorting of an array of strings containing numbers?. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
Java vs. JavaScript: Clearing Up the Confusion
Jun 20, 2025 am 12:27 AM
Java and JavaScript are different programming languages, each suitable for different application scenarios. Java is used for large enterprise and mobile application development, while JavaScript is mainly used for web page development.
Javascript Comments: short explanation
Jun 19, 2025 am 12:40 AM
JavaScriptcommentsareessentialformaintaining,reading,andguidingcodeexecution.1)Single-linecommentsareusedforquickexplanations.2)Multi-linecommentsexplaincomplexlogicorprovidedetaileddocumentation.3)Inlinecommentsclarifyspecificpartsofcode.Bestpractic
How to work with dates and times in js?
Jul 01, 2025 am 01:27 AM
The following points should be noted when processing dates and time in JavaScript: 1. There are many ways to create Date objects. It is recommended to use ISO format strings to ensure compatibility; 2. Get and set time information can be obtained and set methods, and note that the month starts from 0; 3. Manually formatting dates requires strings, and third-party libraries can also be used; 4. It is recommended to use libraries that support time zones, such as Luxon. Mastering these key points can effectively avoid common mistakes.
Why should you place tags at the bottom of the ?
Jul 02, 2025 am 01:22 AM
PlacingtagsatthebottomofablogpostorwebpageservespracticalpurposesforSEO,userexperience,anddesign.1.IthelpswithSEObyallowingsearchenginestoaccesskeyword-relevanttagswithoutclutteringthemaincontent.2.Itimprovesuserexperiencebykeepingthefocusonthearticl
JavaScript vs. Java: A Comprehensive Comparison for Developers
Jun 20, 2025 am 12:21 AM
JavaScriptispreferredforwebdevelopment,whileJavaisbetterforlarge-scalebackendsystemsandAndroidapps.1)JavaScriptexcelsincreatinginteractivewebexperienceswithitsdynamicnatureandDOMmanipulation.2)Javaoffersstrongtypingandobject-orientedfeatures,idealfor
JavaScript: Exploring Data Types for Efficient Coding
Jun 20, 2025 am 12:46 AM
JavaScripthassevenfundamentaldatatypes:number,string,boolean,undefined,null,object,andsymbol.1)Numbersuseadouble-precisionformat,usefulforwidevaluerangesbutbecautiouswithfloating-pointarithmetic.2)Stringsareimmutable,useefficientconcatenationmethodsf
What is event bubbling and capturing in the DOM?
Jul 02, 2025 am 01:19 AM
Event capture and bubble are two stages of event propagation in DOM. Capture is from the top layer to the target element, and bubble is from the target element to the top layer. 1. Event capture is implemented by setting the useCapture parameter of addEventListener to true; 2. Event bubble is the default behavior, useCapture is set to false or omitted; 3. Event propagation can be used to prevent event propagation; 4. Event bubbling supports event delegation to improve dynamic content processing efficiency; 5. Capture can be used to intercept events in advance, such as logging or error processing. Understanding these two phases helps to accurately control the timing and how JavaScript responds to user operations.
What's the Difference Between Java and JavaScript?
Jun 17, 2025 am 09:17 AM
Java and JavaScript are different programming languages. 1.Java is a statically typed and compiled language, suitable for enterprise applications and large systems. 2. JavaScript is a dynamic type and interpreted language, mainly used for web interaction and front-end development.
