h5之js生成二维码

目录架构：

index.html
<!DOCTYPE>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ko" lang="ko">
<head>
<title>Javascript 二维码生成库：QRCode</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=no" />
<script type="text/javascript" src="./js/jquery-3.2.1.min.js"></script>
<script type="text/javascript" src="./js/qrcode.min.js"></script>
</head>
<body>
<input id="text" type="text" value="http://www.runoob.com" style="width:80%" /><br />
<div id="qrcode" style="width:100px; height:100px; margin-top:15px;"></div>

<script type="text/javascript">
var qrcode = new QRCode(document.getElementById("qrcode"), {
	width : 100,
	height : 100
});

function makeCode () {		
	var elText = document.getElementById("text");
	
	if (!elText.value) {
		alert("Input a text");
		elText.focus();
		return;
	}
	
	qrcode.makeCode(elText.value);
}

makeCode();

$("#text").
	on("blur", function () {
		makeCode();
	}).
	on("keydown", function (e) {
		if (e.keyCode == 13) {
			makeCode();
		}
	});
</script>
</body>
</html>
页面效果：


资源文件请访问本人github地址：https://github.com/raind33/HTML5/tree/master/h5js%E7%94%9F%E6%88%90%E4%BA%8C%E7%BB%B4%E7%A0%81

posted @ 2018-08-23 18:01  raindi  阅读(7811)  评论(0)  编辑  收藏  举报