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document.execCommand & contenteditable

https://developer.mozilla.org/zh-CN/docs/Web/API/Document/execCommand
https://developer.mozilla.org/zh-CN/docs/Web/HTML/Global_attributes/contenteditable

demo

click copy

https://codepen.io/webgeeker/pen/XOJaEP

<blockquote contenteditable="true">
    <p>Edit this content to add your own quote</p>
</blockquote>

<cite contenteditable="true">-- Write your own name here</cite>

.output {
    font: 1rem 'Fira Sans', sans-serif;
}

blockquote {
    background: #eee;
    border-radius: 5px;
    margin: 16px 0;
}

blockquote p {
    padding: 15px;
}

cite {
    margin: 16px 32px;
}

blockquote p::before {
    content: '201C';
}

blockquote p::after {
    content: '201D';
}

[contenteditable='true'] {
    caret-color: red;
}

getSelection & execCommand

window.getSelection().toString()


window.document.execCommand(`copy`);
// true

document.execCommand(`copy`);
// true

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