S += new Array(prec - s.length + 1).join('0')Īnd it can be used like this: number_format(1234. In JavaScript, the toLocaleString() method returns a string with a language-sensitive representation of this number: (12345.25).toLocaleString(locale, )+(?!\d))/g, sep) If you prefer a really short way to format the numeric value using using a default method of JavaScript, then the internationalization API is the right thing for you. Using the internationalization API localeString In this article, I will show you 2 of the most useful ways to format a number to display it as a currency string in JavaScript. This has been a regular problem for every developer that starts with number formatting in JavaScript as there are a lot of ways to format numbers in order to display them beautifully to the user. I mean, we aren't machines, it's hard to read that if we can't identify immediately the thousand's separator. Now you know an easy way to compare strings.There's nothing more horrible than reading big numbers like 1234566123 without separators. So, for comparing strings, amongst the many ways there may be, using localCompare is an effective approach because it can be used for different languages. So if you're depending on mathematical operators, getting false may be for different reasons than you believe. String1 is greater than string2 because ba n comes after ba ck.Īnd for the last example: const string1 = "fcc"Ĭonsole.log(string1 "fcc" and "fcc" < "fcc" is false. String1 is not greater than string2, because h comes before w, so it is less than.įor the other example: const string1 = "banana" var myNumeral numeral(1000) var value myNumeral. You can also use mathematical operators like greater than ( >), less than ( string2) Numeral takes numbers or strings that it trys to convert into a number. How to Compare Strings Using Mathematical Operators So, do not depend on -1 or 1, instead on negative (less than 0) or positive (more than 0) values 2. In some browsers, instead of -1, it may return -2 or some other negative value. "fcc" and "Fcc" gives -1 because capital "F" is greater than small "f". The comparison above gives 1 because, in the English locale, ba n in banana comes after ba c in back.Ĭonst compareValue1 = string1.localeCompare(string2)Ĭonst compareValue2 = string1.localeCompare(string3)Ĭomparing "fcc" and "fcc" gives 0 because they are equal in order. Javascript toString method 10 a Javascript String method 10 String Javascript template strings 10 Javascript converting a number into string. It gives -1 because, in the English locale, h in hello comes before w in the world (w is further down in the alphabetical order than h)Īnother example: const string1 = "banana" Here are some examples comparing two strings: const string1 = "hello"Ĭonst compareValue = string1.localeCompare(string2) 0 if string1 and string2 are equal in the alphabetical order.-1 if string1 is smaller (lower in the alphabetical order) than string2.Installing it is as easy as running a single command: npm install dinero.js. 1 if string1 is greater (higher in the alphabetical order) than string2 Dinero.js is a lightweight, immutable, and chainable JavaScript library developed to work with monetary values and enables global settings, extended formatting/rounding options, easy currency conversions, and native support to Intl.Here's the syntax: string1.localeCompare(string2) You can use the localeCompare method to compare two strings in the current locale. When comparing two strings, '2' will be greater than '12', because (alphabetically) 1 is less than 2. A non-numeric string converts to NaN which is always false. The Intl.NumberFormat () constructor accepts two arguments, the first being a locale string, with. When comparing a string with a number, JavaScript will convert the string to a number when doing the comparison. This approach lets you format numbers using custom locale parameters - and in this article, we'll focus on currencies. How to Compare Strings Using localeCompare In JavaScript, the easiest and most popular way to format numbers as currency strings is via the Intl.NumberFormat () method. I'll show you two of them in this article. You may want to compare two strings to know which is higher or lower alphabetically or to see if they are equal.
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