Which logical operator is used to determine if a value is greater than another value?
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If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. IntroductionThe field of computer science has many foundations in mathematical logic. If you have a familiarity with logic, you know that it involves truth tables, Boolean algebra, and comparisons to determine equality or difference. The JavaScript programming language uses operators to evaluate statements that can aid in control flow within programming. In this tutorial, we’ll go over logical operators. These are commonly used with conditional
statements, and the Comparison OperatorsIn JavaScript, there are a number of comparison operators that you can use to evaluate whether given values are different or equal, as well as if a value is greater than or less than another. Often, these operators are used with stored values in variables. Comparison operators all return a
Boolean (logical) value of The table below summarizes the comparison operators available in JavaScript.
Let’s go into each operator in detail. EqualityThe equality operator measures whether values on either side of the operator are equal. Let’s consider the following:
Because
If we instead test whether
With this equivalency expression, you can also test other data types such as strings and Booleans. We’ll use a string example below.
In the first instance, the expression returned Worth noting, is that the
Even though the first line uses a number data type, and the second line tests
Because this operator is not strict about data type, it can support users entering strings instead of numbers, for example. There is no need to convert data types to test equivalency. There are many cases where you may use comparison operators like the
Here, if
the student enters There are many potential applications of comparison operators in JavaScript, and they will help you control the flow of your program. Now that you have a foundation with a few examples for InequalityThe Let’s consider an example.
For this example,
For a statement of inequality to be considered
In this second example, the two values on either side of the operator are equal, so the expression is not true. IdentityThe Here’s an example:
We’ll receive the following output.
The example indicates that Because this operator is strict, you will need to keep in mind that you may need to convert user-entered data from one data type to another, for instance, when working with the identity operator. This may help you keep data types consistent throughout your program. Non IdentityLike We’ll review the following examples.
The output for the above will be as follows.
In this example, since Greater thanThe greater than symbol in JavaScript may be familiar to you from math: Like the Let’s consider the following examples.
We’ll receive the following output:
In the first
instance, Greater than or equalSimilarly, the operator for greater than or equal to will evaluate whether one operand meets the threshold of the other. This operator is typed as Our examples:
Because Less thanThe less than operator appears as the mirror version of the
greater than operator: Consider the following examples as a demonstration.
Here, Less than or equalThe opposite of greater than or equal, the less than or equal operator — Here are a few examples.
The first expression evaluates to Note: Be sure not to confuse the less than or equal operator ( To understand how these comparison operators
can work together in a program, refer to our Logical OperatorsIn JavaScript, there are three logical operators, which connect two or more programming statements to return a These logical operators are summarized in the table below.
Let’s review each of these operators in more detail. ANDThe AND operator is represented by two ampersands — For example, with AND we can check if something is both high quality and has a low price.
Since both variables evaluate to be ORThe OR operator is represented by two pipes — In this example, we’ll check if something is either
Since one of the two conditions ( NOTThe NOT operator is represented by an exclamation point —
In the above statement, The NOT operator is a bit tricky to understand at first. The important part to remember is that NOT checks whether something evaluates to be false. ConclusionLogical operators are the building blocks of flow control in JavaScript programming. Using these operators effectively will help you develop programs that evaluate statements and move to the next stage based on whether a statement is true or false. To continue learning more about JavaScript, check out our How To Code in JavaScript series, and our JavaScript tag. What is the comparison operator for greater than?The result of this comparison operator is a Boolean value of True, or False. True returns a value of "-1", while False returns "0".
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. What is the use of greater than logical operator?This evaluates whether one value (on the left side of the expression) is greater than another value (on the right side of the expression). Like the == operator above, the greater than operator is not strict, and therefore will allow you to mix strings and numbers.
What does the === comparison operator do?The strict equality operator ( === ) checks whether its two operands are equal, returning a Boolean result. Unlike the equality operator, the strict equality operator always considers operands of different types to be different.
What is the meaning of the logical operator ?A logical operator is a symbol or word used to connect two or more expressions such that the value of the compound expression produced depends only on that of the original expressions and on the meaning of the operator. Common logical operators include AND, OR, and NOT.
What is == and === in JavaScript?The main difference between the == and === operator in javascript is that the == operator does the type conversion of the operands before comparison, whereas the === operator compares the values as well as the data types of the operands.
What is the Boolean operator for greater than?Table 4-3 Boolean Operators. |