refs https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Logical_OR_assignment https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators ©xgqfrms 2012-2020 www.cnblogs.com/xgqfrms 发布文章使用:只允许注册用户才可以访问! 原创文章,版权所有©️...
逻辑或赋值(=)是JavaScript中的一种赋值操作符,用于将一个值赋给一个变量,同时如果该值等于另一个值,则将第二个值也赋给该变量。这种操作通常在需要同时设置两个变量时使用。 示例代码如下: var a = 1; a = a || 2; // 将a的值设置为2,因为a的初始值为1,所以结果为2 console.log(a); // 输出...
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Note: In JavaScript, == is a comparison operator, whereas = is an assignment operator. If you mistakenly use = instead of ==, you might get unexpected results.2. Not Equal To OperatorThe not equal to operator != evaluates totrue if the values of the operands aren't equal. false if ...
logical-assignment-operators 要求或禁止逻辑赋值逻辑运算符简写一些该规则报告的问题可以通过 --fix 命令行选项 自动修复ES2021 引入了逻辑运算符 ||、&& 和?? 的赋值运算符简写。以前,这仅允许用于数学运算,例如 + 或*(参见规则 operator-assignment)。如果赋值目标和逻辑表达式的左表达式相同,则可以使用简写。例如...
新的Logical Assignment Operators 提案来自于 Ruby 语言,旨在不影响可读性的情况下尽可能最小化代码量,上面的代码可以写成: foo ||= bar 该提案在 2018-03-22 的 TC39 会议上进入 Stage 1。 相关链接 Logical Assignment Operators 提案:tc39-transfer/proposal-logical-assignment 进入Stage 1 的 Commit:Logica...
See Web technology for developers See JavaScript See JavaScript reference See Expressions and operators Logical AND assignment (&&=) On this Page Syntax Description Examples Specifications Browser compatibility See also The logical AND assignment (x &&= y) operator only assigns if x is truthy....
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And not equivalent to the following which would always perform an assignment: x = x || y; Note that this behavior is different to mathematical and bitwise assignment operators. Examples Setting default content If the "lyrics" element is empty, set theinnerHTMLto a default value: ...
Example: Assignment Operators Copy package main import "fmt" func main() { x, y := 10, 20 //Assign x = y fmt.Println(" = ", x) //output: 20 // Add and assign x = 15 x += y fmt.Println("+= ", x) //output: 35 // Subtract and assign x = 25 x -= y fmt.Println...