How to use try catch instead of exit to end the program in JavaScript

exit can be used to forcefully terminate the program. However, there is no exit in How to use try catch instead of exit to end the program in JavaScript. In other languages, exit can be used to forcefully terminate the program, but it needs to be implemented in other ways in How to use try catch instead of exit to end the program in JavaScript. This article will introduce to you how to use try catch in How to use try catch instead of exit to end the program in JavaScript instead of exit to end the program.

#In How to use try catch instead of exit to end the program in JavaScript, to terminate a program like exit, you need to use a try catch statement.

When we want to terminate it in the try catch statement, we deliberately throw an exception and terminate the program, and the process after throwing the exception will not be executed.

Let’s take a look at the following program.

var flag = true;
try {
    if (flag) {
        throw new Error('终止程序并退出');
    }
    console.log('未执行的代码');
} catch (e) {
    console.log(e.message);
}

Execution result:

终止程序并退出

Through the above method, we can terminate the program.

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