The two priorities are the same, and the comparison (comparision) and Assignment (Assignment) operations are slightly different. The comparison operator has a, =, and so on, the assignment operator has =, + =, *=, and so on.
The comparison
Original location http://caibaojian.com/toutiao/54461. All variable declarations (VAR) or declared functions will be promoted to the top of the current functionWith regard to function expressions, JS splits the code into two lines of code to execute
Front.
Most of the operators in JavaScript are represented by punctuation marks, and a few are represented by keywords, and their syntax is concise and their numbers are indeed quite large. Operators always follow some fixed syntax, and only if you
Let's start with an interesting microblog.The C at the end is the lowest-priority comma operator. The comma operator is the last line of operator precedence and rarely an article records, which hides its sharpness. It may not be a strong JavaScript
Operator PrecedenceOperator precedence in JavaScript is a set of rules. This rule controls the order in which operators execute when evaluating expressions. Operations with higher precedence are performed Mr. Foo the operators of lower precedence.
One, bitwise operatorsIn general applications, we basically use an operator that is not in place. Although, it is based on the underlying, performance and speed will be very good, and that is because the lower level, the use of the difficulty is
Recently, because of the source code in the reading Underscore.js, plus the IFE before the completion of the JavaScript part of the Task2, which a large number of abbreviated sentence wording, especially like?: This trinocular operator is combined
Operator PrecedenceOperator precedence in JavaScript is a set of rules. This rule controls the order in which operators execute when evaluating expressions. Operations with higher precedence are performed Mr. Foo the operators of lower precedence.
The following table lists the JavaScript operators, sorted from highest to lowest in order of precedence. operators that have the same precedence are evaluated in order from left to right.
Operator
Description
. [ ]
Operator PrecedenceOperator precedence in JavaScript is a set of rules. This rule controls the order in which operators execute when evaluating expressions. Operations with higher precedence are performed Mr. Foo the operators of lower precedence.
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