QRCode.js是一个生成二维码的JS库。QRCode.js支持在DOM中使用跨浏览器Canvas和table标签的。 QRCode.js不依赖其他JS库。
基本用法:
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|
<
div
id
=
"qrcode"
></
div
>
<
script
type
=
"text/javascript"
>
new QRCode(document.getElementById("qrcode"), "http://jindo.dev.naver.com/collie");
</
script
>
|
还可以添加其它选项:
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<
div
id
=
"qrcode"
></
div
>
<
script
type
=
"text/javascript"
>
var qrcode = new QRCode(document.getElementById("qrcode"), {
text: "http://jindo.dev.naver.com/collie",
width: 128,
height: 128,
colorDark : "#000000",
colorLight : "#ffffff",
correctLevel : QRCode.CorrectLevel.H
});
</
script
>
|
也可以使用一些方法:
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qrcode.clear();
// 清除二维码
qrcode.makeCode(
"http://naver.com"
); // 生成一个新的二维码
|
浏览器兼容性:
IE6~10, Chrome, Firefox, Safari, Opera, Mobile Safari, Android, Windows Mobile 等等
案例演示:
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<!DOCTYPE html>
<
html
>
<
head
lang
=
"en"
>
<
meta
charset
=
"UTF-8"
>
<
meta
http-equiv
=
"Content-Type"
content
=
"text/html; charset=UTF-8"
/>
<
meta
name
=
"viewport"
content
=
"width=device-width,initial-scale=1,user-scalable=no"
/>
<
title
></
title
>
</
head
>
<
body
>
<
input
id
=
"text"
type
=
"text"
value
=
"http://dapengtalk.blog.51cto.com"
style
=
"width:80%"
/><
br
/>
<
div
id
=
"qrcode"
style
=
"width:100px; height:100px; margin-top:15px;"
></
div
>
<
script
src
=
"js/jquery-1.8.3.min.js"
></
script
>
<
script
src
=
"js/qrcode.js"
></
script
>
<
script
>
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
>
|
页面截图:
扫描二维码:
Github 地址:https://github.com/davidshimjs/qrcodejs
本文转自 frwupeng517 51CTO博客,原文链接:http://blog.51cto.com/dapengtalk/1879568