Qr code generator rainbow color html css javascript no talking

here's a concise summary with a code example for a rainbow-colored qr code generator using html, css, and javascript:

```html
!doctype html
html lang="en"
head
meta charset="utf-8"
meta name="viewport" content="width=device-width, initial-scale=1.0"
titlerainbow qr code generator/title
style
#qr-code {
width: 200px;
height: 200px;
background: linear-gradient(135deg, red, orange, yellow, green, blue, indigo, violet);
display: flex;
justify-content: center;
align-items: center;
}
/style
/head
body
div id="qr-code"/div
input type="text" id="input-text" placeholder="enter text for qr code" /
button onclick="generateqrcode()"generate qr code/button

script
function generateqrcode() {
$('#qr-code').empty().qrcode({ text: text });
}
/script
/body
/html
```

this code creates a simple webpage allowing users to input text, which is then converted into a qr code displayed with a rainbow gradient background. the generator utilizes jquery and a qr code plugin for easy functionality.
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