JavaScript 中布尔值的创建 

<!DOCTYPE html><html lang="en"><body><script>

	// Create a Boolean object using the new keyword and the Boolean() constructor.
	var myBoolean1 = new Boolean(false); // Using new keyword.
	console.log(typeof myBoolean1); // Logs 'object'.

	// Create a Boolean literal/primitive by directly using the number constructor without new.
	var myBoolean2 = Boolean(0); // Without new keyword.
	console.log(typeof myBoolean2); // Logs 'boolean'.

	// Create Boolean literal/primitive (constructor leveraged behind the scenes).
	var myBoolean3 = false;
	console.log(typeof myBoolean3); // Logs 'boolean'.
	console.log(myBoolean1, myBoolean2, myBoolean3); // Logs false false false.

</script></body></html>

 

posted @ 2024-08-07 11:31  黄文Rex  阅读(7)  评论(0)    收藏  举报