动态加载Web字体

Question

I'm new to this web font thing. I understand that a certain font can be downloaded from a URL and used in a web page.

My question is: is it possible to load a web font dynamically depending on the user input? Simply scenario: user type in some text in the text field and select a font name which was not loaded yet. Some javascript code is triggered to dynamically load a web font resource. Is this possible?

Answer 1

Try this (for Google web fonts):

<span>Select font:</span>
<select onchange=fontSelected(event)>
    <option value="default">Browser Default</option>
    <option value="Droid+Sans">Droid Sans</option>
    <option value="Open+Sans">Open Sans</option>
</select>
<h1 id="theText">This is a sample text...</h1>

function fontSelected(e){
    var select = e.target;
    if (select.selectedIndex > 0) { // web font
        var fontID = select.options[select.selectedIndex].value;
        if (!document.getElementById(fontID)) {
            var head = document.getElementsByTagName('head')[0];
            var link = document.createElement('link');
            link.id = fontID;
            link.rel = 'stylesheet';
            link.type = 'text/css';
            link.href = 'http://fonts.googleapis.com/css?family='+fontID;
            link.media = 'all';
            head.appendChild(link);
        }
        document.getElementById("theText").style.fontFamily = select.options[select.selectedIndex].innerHTML;
    }else{ // default browser font
        document.getElementById("theText").style.fontFamily = null;
    }
}

http://jsfiddle.net/zejz2tkp/1/

This code is bassed on this post: http://amirush.blogspot.ro/2013/07/dynamic-loading-of-web-fonts.html

You can also use one of the existent answers: Load external font with javascript and jquery or dynamically load fonts html jquery