index.js console.log(new Set([1, 1, 1])); // 👉️ { 1 } The size property of the Set allows us to get the number of values stored in the Set. If the number of values in the Set is equal to 1, then all of the values in the array are equal or the array only contai...
Use the strict inequality (!==) operator to check if two strings are not equal, e.g. `a !== b`.
A Javascript library to check two objects whether equal (includes type), objects can be array/string/number/JSON/function, etc.. Latest version: 1.0.8, last published: a year ago. Start using check-equal in your project by running `npm i check-equal`. Th
If the start index is greater than or equal to the length of the string, the String.includes() method does not perform any search and simply returns false: 'My name is Atta!'.includes('Atta', 20) // false If the starting index is less than 0, the String.includes() method searches...
ABooleanis returned indicating if the two were deeply equal. Benchmarks Running Node v10.13.0 The benchmarks can be found in the/benchdirectory. They are separated into two categories: basic– compares an object comprised ofString,Number,Date,Array, andObjectvalues. ...
check if the string contains spaces by passing a whitespace string to the method. Since the method returns an index when a whitespace exists, we can check if the value is greater than or equal to zero which returnstrueif there is a whitespace in any index of the string andfalseif ...
check.in(substring, string): Returnstrueifsubstringis instring,falseotherwise. check.match(string, regex): Returnstrueifstringmatchesregex,falseotherwise. Number predicates check.number(thing): Returnstrueifthingis a number,falseotherwise. Note thatNaN,Number.POSITIVE_INFINITYandNumber.NEGATIVE_INFINITYare...
asciiString.notEmpty(), (str, separator) => str.split(separator).length === 1 ))Unless you got lucky, you probably saw this check pass. This is because we're testing for a relationship between these strings. If separator is not found in str, then this test passes. The second ...
constvalue='string';isNaN(value);// true 😱 Do you see the problem? Let's explain this in words. Doesstringequal toNaN? Remember, don't think of NaN as "not a number", it's just a value called NaN. The answer is NO!stringdoes not equal toNaN. Let me drill it down: ...
asn-one_test.js +551 base64 index.js +167 buffer index.js +2113 data.js +24 fileInfo.txt +18 ieee754 index.js +99 pvutils utils.js +6008 utils.js +348 base64_test base64.js +85 base64_test.js +47 fileInfo.txt +3 string.js +17 behaviorTree_test behaviorTree...