Use Javascript localeCompare() method to compares two strings in the current locale. This method returns 0 if both the strings are equal.
Note:
- The locale is based on the language settings of the browser.
- This method does case-sensitive comparing.
Syntax
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string_1.localeCompare(String_2) |
Return Value:
- -1 if the reference string is sorted before the compareString
- 0 if the two strings are equal
- 1 if the reference string is sorted after the compareString
Example of JavaScript Comparing strings
The example of comparing the 2 strings using the localeCompare() method in js.
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<!DOCTYPE html> <html> <head> <script> var str1 = "ABCD"; var str2 = "ABCD"; var n = str1.localeCompare(str2); alert(n) //console.log( myString ); </script> </head> </html> |
JavaScript string compare case insensitive
The simplest way to do it (if you’re not worried about special Unicode characters) is to call toUpperCase:
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var areEqual = string1.toUpperCase() === string2.toUpperCase(); |
Q: How to compare two strings character by character in javascript?
Answer: 1) how can I check two shuffle string have the same characters As I have.
2) If not have the same characters then which are the characters not exist in the second sting
Using a while loop seems a reasonable solution:
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var str2 = "@#//sanra12"; s1 = str1.split(''); s2 = str2.split(''); var i = s1.length + 1; while (i--) { if (s2.indexOf(s1[i]) >= 0) s2.splice(s2.indexOf(s1[i]), 1); } console.log(s2) |
In JavaScript string not equal is != same as !==
They are subtly not the same.
!= checks the value!== checks the value and type
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'1' != 1 // false (these two are the same) '1' !== 1 // true (these two are **not** the same). |
Q: How to compare two strings in javascript if condition?
Answer: You could do like that: Using “===” triple equals.
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if (str === "txt1" || str === "txt2") { } |
Or you could use an array and check with an existential quantifier like
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if (["txt1", "txt2"].some(a => a === str)) { |
Complete code
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<!DOCTYPE html> <html> <head> <script> var str = "txt1"; if (str === "txt1" || compare === "txt2") { alert("Matched") } else { alert("Not Matched") } //console.log( myString ); </script> </head> </html> |
Output: Matched
Q: What is the best way to compare two strings in JavaScript?
Answer: The best way To compare two strings in JavaScript is to use the localeCompare() method.
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var str1 = "cd"; var str2 = "ab"; var n = str1.localeCompare(str2); |
Do comment if you have any questions or suggestions on this tutorial.
Note: The All JS Examples codes are tested on the Safari browser (Version 12.0.2) and Chrome.
OS: macOS 10.14 Mojave
Code: HTML 5 Version
Degree in Computer Science and Engineer: App Developer and has multiple Programming languages experience. Enthusiasm for technology & like learning technical.