Can i compare strings in javascript?
You may want to compare two strings to know which is higher or lower alphabetically or to see if they are equal. Show
You can do this in many ways. I'll show you two of them in this article. 1. How to Compare Strings Using localeCompareYou can use the
Here are some examples comparing two strings:
It gives Another example:
The comparison above gives One more example:
Comparing "fcc" and "fcc" gives In some browsers, instead of -1, it may return -2 or some other negative value. So, do not depend on -1 or 1, instead on negative (less than 0) or positive (more than 0) values 2. How to Compare Strings Using Mathematical OperatorsYou can also use mathematical operators like greater than (>), less than (<), and equal to when comparing strings. Mathematical operators work similarly to Using the previous examples:
For the other example:
And for the last example:
With mathematical operators, "fcc" is greater than "Fcc", but with
This behavior is one reason why I don't recommend using mathematical operators for comparing strings, even though it has the potential to do so. Another reason why I don't recommend using mathematical operators is because So, for comparing strings, amongst the many ways there may be, using Now you know an easy way to compare strings. Happy coding! Learn to code for free. freeCodeCamp's open source curriculum has helped more than 40,000 people get jobs as developers. Get started In this short JS tutorial, you’ll learn how to compare strings and see code examples. Strict equalityTo determine whether the strings are equal, you can use the strict equality operator
Comparing the strings using strict equality
Case-insensitive string comparisonIf you want to do case insensitive comparison of the strings in JavaScript, you can turn both strings to lowercase and compare them using strict equality operator afterwards.
Comparing the length of JavaScript stringsIf you need to find which of two strings is longer, then the operators “greater than” and “lower than” won’t suit you well. They compare the characters of a string in alphanumeric order one by one and consider the length of the strings in the very end.
In JS, every string has the
Check if a string contains another stringTo check if one string is a substring of
another one in JavaScript, there’s a built-in function
Read more JavaScript tutorials or Learn Full-Stack JS from scratch! Can you compare strings with == in JavaScript?Firstly, you are safe to compare strings that contain characters from Basic Multilangual Plane (including the ASCII characters) using regular comparison operators === , == or utility function Object.is() . Both str1 and str2 contain ASCII characters, so you can safely compare them using comparison operators.
Can === be used for string comparison?Yes, === can compare two strings, giving true or false as a result.
How do you check if a string is equal to another string in JavaScript?To check if two strings are equal in JavaScript, use equal-to operator == and pass the two strings as operands. The equal-to operator returns a boolean value of true if the two strings are equal, or else, it returns false.
Can I compare two strings?Using String. equals() :In Java, string equals() method compares the two given strings based on the data/content of the string. If all the contents of both the strings are same then it returns true. If any character does not match, then it returns false.
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