百度云盘 传送门 密码:304e
输入网址点击按钮生成二维码，默认为我的博客首页
二维码格式演示
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>qrcode.js插件将你的内容转换成二维码格式</title>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<div class="lanren">
<h1>Gary_请在下面输入框中输入内容</h1>
<input type="text" placeholder="请在这里输入内容" id="demo">
<button id="send">点击生成二维码</button>
<br></br><br></br>
<div id="qrcode"></div>
</div>
<p></p>
<script src="js/qrcode.min.js"></script>
<script>
window.onload =function(){
(function(){
var defaultContent = 'http://www.cnblogs.com/1138720556Gary/';
var content = document.getElementById("qrcode");
var qrcode = new QRCode(content,{
width:200,
height:200
});
document.getElementById("send").onclick =function(){
var value = document.getElementById("demo").value || defaultContent;
qrcode.makeCode(value);
content.style.display = "block";
}
})();
}
</script>
</body>
</html> index.html
实现过程：
设置二维码的长宽
var qrcode = new QRCode(content,{
width:200,
height:200
}); 把输入网址或者默认网址传给二维码
document.getElementById("send").onclick =function(){
var value = document.getElementById("demo").value || defaultContent;
qrcode.makeCode(value);
content.style.display = "block";
} 页面内容加载完成之后立即执行window.onload加载事件相应的函数
<script src="js/qrcode.min.js"></script>
<script>
window.onload =function(){
(function(){
var defaultContent = 'http://www.cnblogs.com/1138720556Gary/';
var content = document.getElementById("qrcode");
var qrcode = new QRCode(content,{
width:200,
height:200
});
document.getElementById("send").onclick =function(){
var value = document.getElementById("demo").value || defaultContent;
qrcode.makeCode(value);
content.style.display = "block";
}
})();
}
</script> 将Js事件绑定到按钮
<div class="lanren">
<h1>Gary_请在下面输入框中输入内容</h1>
<input type="text" placeholder="请在这里输入内容" id="demo">
<button id="send">点击生成二维码</button>
<br></br><br></br>
<div id="qrcode"></div>
</div> 转载于:https://www.cnblogs.com/1138720556Gary/p/9383358.html
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