// .js
if (my.caniuse('ix.generateimagefromcode')) {
my.ix.generateimagefromcode({
code: 'https://www.alipay.com',
format: 'qrcode',
width: 200,
correctlevel: 'h',
success:(r)=>{
console.log(json.stringify(r));
this.setdata({qrcode: r.image});
}
});
}