当赋值包含无法被指定为变量值的条件时，它被称为什么？
我知道这是简单的术语，但我无法通过谷歌搜索得到它......当被分配的变量的值通过时它被称为什么？
php 中的示例：
<?php
if($bob = 5){ echo 'The assignment came through as a truthy value!, bob now equals '.$bob.'!'; }
if($bob = false){ echo 'The assignment occurred again, but the value of the assignment is the value "false", so this if block will not be executed!. Bob now equals '.$bob.'!'; }
echo ' Finally, bob is a: '.(string) $bob;
?>
javascript 中的示例：
bob = bob || {};
I know that this is simple terminology, but I can't get it via google searching... what is it called when the value of a variable being assigned passes through?
An example in php:
<?php
if($bob = 5){ echo 'The assignment came through as a truthy value!, bob now equals '.$bob.'!'; }
if($bob = false){ echo 'The assignment occurred again, but the value of the assignment is the value "false", so this if block will not be executed!. Bob now equals '.$bob.'!'; }
echo ' Finally, bob is a: '.(string) $bob;
?>
An example in javascript:
bob = bob || {};
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在第一个示例中，您使用赋值作为表达式；也就是说，赋值语句返回分配的值（这种行为是错误的常见来源；人们经常在条件中意外地使用
=而不是==）。第二个示例是使用
||运算符的短路行为。In your first example, you're using assignment as an expression; that is, the assignment statement returns the value assigned (this behavior is a common source of bugs; often people accidentally use
=instead of==in their condition).The second example is using the short-circuiting behavior of the
||operator.