Except explicit open source licence (indicated Creative Commons / free), the "Letter Number Code (A1Z26) A=1, B=2, C=3" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, breaker, translator), or the "Letter Number Code (A1Z26) A=1, B=2, C=3" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, or API access for "Letter Number Code (A1Z26) A=1, B=2, C=3" are not public, same for offline use on PC, mobile, tablet, iPhone or Android app! Ask a new question Source codeĭCode retains ownership of the "Letter Number Code (A1Z26) A=1, B=2, C=3" source code. Use of modulo 26 in order to get 1=A,2=B,…26=Z then 27=A, 28=B etc. Use of a custom alphabet, or reversed alphabet (A=26, Z=1) Use of leading zeros to be able to concatenate numbers AB = 0102, else AB = 12 and 12 = L. Use of a supplementary character for space (usually 0 or 27) I hope this article helped you to understand how to perform case-insensitive comparisons in javascript strings.Shift of numbers: the alphabet can start with A = 0 or A = 1, but also A = 65 or A = 97 ( ASCII code). Javascript: Remove first character from a string.Javascript: Remove last character of string.Javascript: How to remove text from string.Remove character at a specific index from a string in javascript.Remove double quotes from a string in javascript (4 ways).We are passing ‘en-US’, which indicates that the English – United States locale should be used. The above code uses the toLocaleUpperCase() or toLocaleLowerCase() method in javascript to compare the strings in the example. OR let dummyString1 = "Javascript is most popular Language"Ĭonsole.log(dummyString1.toLocaleLowerCase('en-US') = dummyString2.toLocaleLowerCase('en-US')) Let dummyString2 = "JAVASCRIPT IS MOST POPULAR LANGUAGE"Ĭonsole.log(dummyString1.toLocaleUpperCase('en-US') = dummyString2.toLocaleUpperCase('en-US')) Since this argument is optional, the locale is picked up from the host system if it is not present.Ĭode using :- let dummyString1 = "Javascript is most popular Language" The locale is a parameter that specifies which locale should be used. The javascript’s toLocaleLowerCase(locale) method returns the calling string value converted to lower case according to locale-specific mappings. The toLocaleUpperCase(locale) method in javascript returns the calling string value converted to upper case according to any locale-specific mappings. How to do case-insensitive comparison in javascript using toLocaleUpperCase() In the last two lines of the code, the same strings get compared but using different English and German locales. One also needs to provide the specific locale. In the above example, dummyString1 is the calling string, and dummyString2 is the reference string. The above code uses the localeCompare() method in javascript to compare the strings. The localeCompare() method in javascript returns a number that indicates the reference string’s sort order to the string calling the method. The localeCompare() method is used when we need to take care of internationalization as well in order to get accurate case-insensitive comparisons.įunction caseInsensitiveComparison(_string1, _string2, _locale) ) = 0 Ĭonsole.log(caseInsensitiveComparison(dummyString1, dummyString2, 'en'))Ĭonsole.log(caseInsensitiveComparison(dummyString1, dummyString2, 'de')) How to do case-insensitive comparison in javascript using localeCompare() $ specifies that the match must be at the end of the string.^ specifies that the match must start at the beginning of the string.We have created an object of Regular expression to match a pattern similar to dummyString2. Here, we use the test() method in javascript to execute a search and determine if the pattern matches the specified string. Let pattern = new RegExp('^' + dummyString2 + '$', 'i') Let dummyString2 = "JAVASCRIPT IS MOST POPULAR LANGUAGE" Perform case-insensitive string comparison on “Hello Javascript: This is dummy string” and “JAVASCRIPT IS MOST POPULAR LANGUAGE”Ĭode using :- let dummyString1 = "Javascript is most popular Language" These objects are patterns used to match character combinations in strings. How to do case-insensitive comparison in javascript using RegEx Remove all line breaks from a String in PHP.Remove characters from String before a character in PHP.Remove a string after the last slash in PHP.Remove the BOM (Byte Order Mark) from a String in PHP.Remove a SubString from a String in PHP.Looking for Something Search for: Search Recent Posts
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