// jsqrcode获取当前网址并赋值给id=text的value
document.getElementById("text").value = window.location.href;
var qrcode = new QRCode(document.getElementById("qrcode"), {
width: 150,
height: 150
});
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();
}
});