基于JS实现二维码名片生成的示例代码

//初始化QRCode对象
var qrcode = new QRCode(document.getElementById("qrcode"));
//也可以在初始化QRCode对象，传入更多参数
var qrcode = new QRCode(document.getElementById("qrcode"),{
width: 128,
height: 128,
colorDark : "#000000",
colorLight : "#ffffff",
correctLevel : QRCode.CorrectLevel.H
});
//需要生成二维码的字符串
qrcode.makeCode("Http://www.leixuesong.cn");
//清除二维码
qrcode.clear();

var qrcode = new QRCode("qrcode");

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();
    }
});

*{
				margin:0;
				padding:0;
			}
			body{
				background-image: linear-gradient(#1e045f, #032561, #183661);
				background-position:center top;
			}
			.content{
				width:950px;
				margin:auto;
			}
			#wrap{
				float:left;
				width:480px;
				height:280px;
				
				margin:100px;

			}
			#wrap p{
				float:left;
				width:200px;
				height:40px;
				border-radius:5px;
				color:#fff;
				margin:20px 20px;
				overflow:hidden;
				text-align:center;
				line-height:40px;
			}
			#wrap p span{
				
				float:left;
				width:50px;
				height:40px;
				background:#333;
				
				
			}
			#wrap p input{
				float:left;
				width:150px;
				height:40px;
				border:0;
				background:#000;
				color:#fff;
				outline:none;
				text-indent:10px;
			}
			#qrcode{
				float:left;
				width:260px;
				height:260px;
				border:1px solid red;
				margin-top:110px;
			}
			p#btn{
				width:450px;
				background:#6c0;
				cursor:pointer;
			}

var name='', company='',job='',adress='',moblie='',desc='';
			//特效思维:什么元素 触发 什么事件 实现 什么效果
			$("#btn").click(function(){//点击实现什么功能
				//alert("注意点，你点到我了")
				//获取值
				name = "FN:" + $("#name").val() + "\n";//获取值
				company = "ORG:" + $("#company").val() + "\n";
				job = "TITLE:" + $("#job").val() + "\n";
				adress = "WORK:" + $("#adress").val() + "\n";
				moblie = "TEL:" + $("#moblie").val() + "\n";
				desc = "NOTE:" + $("#desc").val() + "\n";
				var info ="BEGIN:VCARD\n" + name + company + job + adress + moblie + desc + "END:VCARD";
				//console.log(info);//在控制台输出
				//生成二维码
				var qrcode = new QRCode("qrcode");
				qrcode.makeCode(info);
			});