What do javascript keywords mean?

In JavaScript, keywords refer to those words that have specific meanings in the JavaScript language and become part of the JavaScript syntax; keywords cannot be used as variable names and function names. If keywords are used as variable names or function names name will cause JavaScript to cause compilation errors during the loading process.

The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.

What do the keywords of javascript mean?

Javascript keywords (Reserved Words) refer to those words that have specific meanings in the Javascript language and become part of the Javascript grammar. Javascript keywords cannot be used as variable names and function names. Using Javascript keywords as variable names or function names will cause compilation errors in Javascript during the loading process.

Keywords are reserved and cannot be used as variable names or function names
Here is just a rough list of functions. In fact, if you have studied Java or JS and are familiar with it, you basically know all of these.

##break Exit immediately Loop to prevent any code from being repeatedly executed again case Complete judgment with switch catch Cooperate with try for error judgment continue Exit the current loop, and allow the next loop to continue based on the control expression default With switch, use this item when the condition does not exist delete Delete an attribute do is used for do-while, post-test loops, that is, the exit condition is calculated after executing the code inside the loop else Cooperate with if conditional judgment, used for conditional selection jump finally Used to prevent exceptions, it will be processed regardless of whether the exception occurs for for statement, loop statement function Function keyword if if statement is used to judge in 1. Use for to traverse the object, 2. Judge a certain attribute Belongs to an object instanceof Is an object an instance of another object new Create a new object return Exit from the current function and return a value from that function switch Multiple judgment statements to make up for if this always points to the object that calls the method throw Throw exception try Cooperate with catch to determine errors typeof Detect the data type of the variable var Declare the variable void Declaration No return value while The while judgment statement can be used with do to make pre-judgments, or used independently to make post-judgments with with statement is used to set the scope of code in a specific object

Name	Function

JS reserved words

Name Name Name Name abstract boolean byte char class const debugger double ##enum float int package short ##throws transient volatile Related recommendations: javascript learning tutorial

export	extends	final
goto	implements	import
interface	long	native
private	protected	public
static	super	synchronized

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