How to enable Apple javascript

Apple JavaScript is a framework developed by Apple that allows developers to use JavaScript language to develop iOS and macOS applications and access device hardware and software resources. In this article, we will discuss how to enable JavaScript on Apple devices, as well as some basic usage and examples.

How to turn on JavaScript on Apple devices

Turning on JavaScript is easy. We only need to turn on the Safari option in the device's settings, enter the advanced settings, and then turn on the JavaScript option. The specific steps are as follows:

1. Open the device's "Settings" application.
2. Scroll under the "Safari" option and click on it.
3. Click on the "Advanced" option.
4. Find the "JavaScript" option and turn it on.
5. Restart the browser to apply changes.

Once JavaScript is enabled, you will be able to run all websites and apps written in JavaScript on Safari.

Basic usage of JavaScript

JavaScript is known as an object-based programming language that allows developers to write dynamic, interactive, and reusable code. On iOS and macOS platforms, JavaScript is frequently used to develop web applications, mobile applications, and desktop applications. Here are three examples of basic usage:

1. Create a simple JavaScript function

Below is a simple function that will receive two numbers as parameters and return their sum.

function addNumbers(num1, num2) {

return num1 num2;

}

We can test this function in the JavaScript console. The console is a powerful tool that helps developers learn and debug JavaScript code. To access the console, click the "Develop" option in Safari and select "JavaScript Console."

Enter the following code in the console:

addNumbers(5, 10);

This will return 15 because the sum of 5 and 10 is 15.

2. Modify HTML elements

JavaScript can be used to modify the text, style and attributes of HTML elements. The following example shows how to change the text:

HTML:

I am a dog.

JavaScript:

document.getElementById("demo").innerHTML = "I am a cat.";

This will be passed to JavaScript code Change the text to "I am a cat".

3. Create a simple game

JavaScript can be used to create a variety of games and animations. The following example shows a simple quick counting game.

HTML:

Please click the start button and count to 10 as fast as possible!

Start

JavaScript:

var count = 0;

function startGame() {

count = 0;

document.getElementById( "demo").innerHTML = count;

setInterval(increaseCount, 1000);

}

function increaseCount() {

count ;

document.getElementById("demo").innerHTML = count;

if (count >= 10) {

clearInterval();

alert("恭喜您，您数到了10！");

}

}

This will create a start button and a counter on the page, when the user clicks the start button, the timer will start counting.

Conclusion

JavaScript is a powerful programming language that allows developers to create outstanding applications for iOS and macOS devices. In this article, we discuss how to enable JavaScript on Apple devices and provide some examples of basic usage. If you are learning JavaScript, we recommend using the console and online documentation to access more tutorials and examples.

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