<!doctype html>
<html class="no-js">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>二维码</title>
<link rel="stylesheet" href="assets/css/amazeui.min.css">
</head>
<body style="padding: 50px;">
<div class="am-input-group">
<input type="text" class="am-form-field" id="doc-qr-text">
<span class="am-input-group-btn">
<button class="am-btn am-btn-default" type="button" id="doc-gen-qr">生成</button>
</span>
</div><br>
<div id="doc-qrcode" class="am-text-center"></div>
<!--[if (gte IE 9)|!(IE)]><!-->
<script src="assets/js/jquery.min.js"></script>
<!--<![endif]-->
<!--[if lte IE 8 ]>
<script src="assets/ie8/jquery.min.js"></script>
<script src="assets/ie8/modernizr.js"></script>
<script src="assets/js/amazeui.ie8polyfill.min.js"></script>
<![endif]-->
<script src="assets/js/amazeui.min.js"></script>
<script>
$(function() {
var $input = $(‘#doc-qr-text‘);
$qr = $(‘#doc-qrcode‘);
function makeCode(text) {
$qr.empty().qrcode(text);
}
$input.val(location.href);
makeCode(location.href);
$(‘#doc-gen-qr‘).on(‘click‘, function() {
makeCode($input.val());
});
$input.on(‘focusout‘, function() {
makeCode($input.val());
});
});
</script>
</body>
</html>
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效果图：
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原文：http://onestopweb.iteye.com/blog/2278747