As mentioned earlier in this guide, there are two ways that you can utilize the typeof operator in JavaScript. One is to use brackets. The other is to use it without any brackets. The behavior is almost the same except when used on an operation. When used without the brackets, the type...
The logical NOT (!) operator (logical complement, negation) takes truth to falsity and vice versa.Here are some examples:OperationResult !false true !NaN true !0 true !null true !undefined true !"" true !true false !-3 false !"-3" false !42 false !"42" false !"string" false !"...
Use Library-Defined Function Objects to Substitute the % Operator in C++ The C++ standard library defines multiple classes that represent traditional arithmetic, relational and logical operators. These are called function objects and have names as std::plus<Type>, std::modulus<Type> and etc. Type...
We can use the modulo operator to determine whether a number is even or odd, as seen with this function: // Initialize function to test if a number is evenconstisEven=x=>{// If the remainder after dividing by two is 0, return trueif(x%2===0){returntrue;}// If the number is ...
Here is a post where I use this technique:Highlight duplicate rows Back to top 6. Example 4 - Logical operators The following formula counts how many times text string "Han" equals a cell value in cell range C9:C13, it also checks if dates in cell range B9:B13 are larger than or eq...
In another approach, you can use the arguments.length property to determine the number of arguments passed to a function. This can be useful for handling optional arguments in your function. For example, consider the following function that takes two arguments and use the logical OR operator to...
Formula in cell G4:=SUMPRODUCT(--(B2:B6=$G$2))Back to top5.1 Explaining formulaStep 1 - Logical expression returns a boolean value that we must convert to numbersThere is only one array in this formula but something else is distorting the picture. A comparison operator (equal sign) and...
In this article, we will see how to check if a number is between two values in JavaScript. We will be using the comparison operator and the logical operators to achieve this.We can use these operators either with the if statement or the ternary operator ?: in JavaScript....
Use +One “trick” is to use the unary operator + before the string:+'10,000' //NaN ✅ +'10.000' //10 ✅ +'10.00' //10 ✅ +'10.20' //10.2 ✅ +'10.81' //10.81 ✅ +'10000' //10000 ✅See how it returns NaN in the first example, which is the correct behavior: ...
When you use the AND operator to evaluate non-boolean values, the expression immediately returns the first operand’s value if the operand is falsy without evaluating the second. This behavior is known as short-circuiting, and you can use it to writeconditional statements in JavaScript. However,...