Introduction to WebFontLoader
WebFontLoader is an open-source library that simplifies the process of adding custom fonts to web pages. It provides a flexible approach to handle font loading for both self-hosted and third-party font providers.
Key Features of WebFontLoader
WebFontLoader supports many font providers, including Google Web Fonts, Typekit, and custom WebFont definitions. Below are some examples of how to use these APIs:
1. Loading Google Fonts
To load Google Fonts, use the following code snippet:
WebFont.load({
google: {
families: ['Droid Sans', 'Droid Serif']
}
});
2. Loading Typekit Fonts
To load Typekit Fonts, you can use this example:
WebFont.load({
typekit: {
id: 'xxxxxx'
}
});
3. Loading Custom Fonts
You can also load custom fonts with WebFontLoader:
WebFont.load({
custom: {
families: ['My Font', 'My Other Font:n4,i4,n7'],
urls: ['http://localhost/fonts.css']
}
});
4. Active and Inactive Callbacks
WebFontLoader provides callbacks for different stages of font loading:
WebFont.load({
google: {
families: ['Droid Sans', 'Droid Serif']
},
active: function() {
console.log('Fonts are active');
},
inactive: function() {
console.log('Fonts could not be loaded');
}
});
5. Event Subscription
You can subscribe to various font-loading events:
WebFont.load({
google: {
families: ['Droid Sans', 'Droid Serif']
},
fontloading: function(familyName, fvd) {
console.log('Font ' + familyName + ' is loading');
},
fontactive: function(familyName, fvd) {
console.log('Font ' + familyName + ' is active');
},
fontinactive: function(familyName, fvd) {
console.log('Font ' + familyName + ' is inactive');
}
});
Example Application
Here is an example of a simple HTML application that uses WebFontLoader:
<!DOCTYPE html>
<html>
<head>
<title>WebFontLoader Example</title>
<script src="https://ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js"></script>
<script>
WebFont.load({
google: {
families: ['Droid Sans', 'Droid Serif']
},
active: function() {
console.log('Fonts are active');
},
inactive: function() {
console.log('Fonts could not be loaded');
}
});
</script>
<style>
body {
font-family: 'Droid Sans', sans-serif;
}
</style>
</head>
<body>
<h1>Hello, WebFontLoader!</h1>
<p>This is an example of using custom fonts with WebFontLoader.</p>
</body>
</html>
In this example, we load Google Fonts ‘Droid Sans’ and ‘Droid Serif’. The active and inactive callbacks will log messages to the console during the font loading process.
WebFontLoader helps improve website performance and provide a better user experience by handling font loading efficiently. This comprehensive guide aims to help you integrate and maximize the usage of WebFontLoader in your web projects.
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