In addition to the comparison operators, which can be used on string values, the concatenation operator (&) concatenates two string values together, returning another string that is the union of the two operand strings. For example, “my ” & “string” returns the string “my string”.
Tags: assignment, ColdFusion, comparison, concatenate, JavaScript, operators, string
Following on from the first three parts of the “Using JavaScript Operators” in ColdFusion 8, where I introduced Arithmetic, Assignment and Logical Operators, it is now the turn of Comparison Operators.
Tags: cfscript, ColdFusion, comparison, equal, greater, JavaScript, less, not, operators
Logical operators are typically used with Boolean (logical) values; when they are, they return a Boolean value. However, the && and || operators actually return the value of one of the specified operands, so if these operators are used with non-Boolean values, they may return a non-Boolean value.
Tags: ColdFusion, JavaScript, logical, not, operators, or
In my first post in this series, I introduced Using JavaScript Arithmetic Operators in ColdFusion 8. Now we’ll concentrate on Assignment operators.
An assignment operator assigns a value to its left operand based on the value of its right operand.
The basic assignment operator is equal (=), which assigns the value of its right operand to its left operand. That is, x = y assigns the value of y to x. The other assignment operators are usually shorthand for standard operations, as shown in the following table.
Tags: assignment, assignment operator, ColdFusion, equal, examples, JavaScript, Meaning, operators, shorthand, subtraction, tutorial, variables
An often mentioned complaint by ColdFusion developers is the lack of operators commonly found in other programming languages such as JavaScript. For example, instead of the greater-than (>) symbol we have been restricted to the more wordy GT or GREATER THAN operator. However, in ColdFusion 8 this has changed and we have more freedom to use familiar JavaScript operators in <cfscript> blocks.
In the following series of posts, I will introduce the changes and show some simple examples. The first in the series is Arithmetic Operators.
Arithmetic operators take numerical values (either literals or variables) as their operands and return a single numerical value. The standard arithmetic operators are addition (+), subtraction (-), multiplication (*), and division (/).
These operators work as they do in most other programming languages.
Tags: addition, arithmetic, ColdFusion, decrement, division, examples, increment, JavaScript, literals, modulus, multiplication, operators, subtraction, tutorial, variables