What is the VBScript operator
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VBScript has a complete set of operators, including arithmetic operators, comparison operators, join operators, and logical operators.
Operator precedence
When an expression contains multiple operators, each part is evaluated in a predetermined order, which is called operator precedence. You can use parentheses to cross this order of precedence and force some parts of the expression to be evaluated first. When operating, always execute the operators in parentheses before the operators outside the parentheses. However, the standard operator precedence is still followed in parentheses.
When an expression contains multiple operators, the arithmetic operator is evaluated first, then the comparison operator is evaluated, and finally the logical operator is evaluated. All comparison operators have the same priority, that is, the comparison operators are calculated from left to right. The precedence of arithmetic and logical operators is as follows:
Arithmetic operator comparison operator logical operator
Description symbol
Power ^ equals = logical non-Not
Minus sign-not equal to logic and And
Multiply * less than logical XOR Xor
Divider\ less than or equal to = logical implied Imp
Add + object reference to compare Is
Minus-
String concatenation &
When the multiplication sign and division sign appear in the same expression at the same time, the multiplication and division operators are calculated from left to right. Similarly, when addition and subtraction appear in the same expression at the same time, the addition and subtraction operators are calculated from left to right.
The string concatenation (&) operator is not an arithmetic operator, but it comes after all arithmetic operators and before all comparison operators in precedence order. The Is operator is an object reference comparison operator. It does not compare objects or their values, but simply checks to determine whether two object references refer to the same object.
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