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1. ÉêÇëС³ÌÐòÂëAPI½Ó¿ÚȨÏÞ

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2. µ÷ÓÃAPI½Ó¿ÚÉú³ÉС³ÌÐòÂë

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```javascript

$.ajax({

url: 'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=' + access_token,

type: 'POST',

data: JSON.stringify({

scene: '²ÎÊýÖµ',

page: 'pages/index/index'

}),

success: function (res) {

// Éú³É¶þάÂëͼƬ

}

});

```

3. ½«BufferÊý¾Ýת»»ÎªÍ¼Æ¬

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```javascript

function bufferToDataURL(buffer) {

const arrayBuffer = new Uint8Array(buffer);

const str = arrayBuffer.reduce((data, byte) => data + String.fromCharCode(byte), '');

return 'data:image/png;base64,' + btoa(str);

}

```

4. ½«Í¼Æ¬ÏÔʾÔÚH5Ò³ÃæÖÐ

µ÷ÓÃbufferToDataURLº¯Êý½«BufferÊý¾Ýת»»ÎªDataURL¸ñʽ£¬È»ºó½«Æä¸³Öµ¸øimg±êÇ©µÄsrcÊôÐÔ£¬¼´¿ÉÔÚH5Ò³ÃæÖÐÏÔʾС³ÌÐòÂë¡£

ÀýÈ磺

```html

<img id="qrcode" src="" />

```

```javascript

document.getElementById('qrcode').src = bufferToDataURL(res.data);

```

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