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Lwdthe1/copyTextToClipboardOnClick.js

Created September 21, 2016 21:21
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  1. Lwdthe1 created this gist Sep 21, 2016.
    56 changes: 56 additions & 0 deletions copyTextToClipboardOnClick.js
    View file
    Original file line number Diff line number Diff line change
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    function copyTextToClipboard(text) {
    var textArea = document.createElement("textarea");

    //
    // *** This styling is an extra step which is likely not required. ***
    //
    // Why is it here? To ensure:
    // 1. the element is able to have focus and selection.
    // 2. if element was to flash render it has minimal visual impact.
    // 3. less flakyness with selection and copying which **might** occur if
    // the textarea element is not visible.
    //
    // The likelihood is the element won't even render, not even a flash,
    // so some of these are just precautions. However in IE the element
    // is visible whilst the popup box asking the user for permission for
    // the web page to copy to the clipboard.
    //

    // Place in top-left corner of screen regardless of scroll position.
    textArea.style.position = 'fixed';
    textArea.style.top = 0;
    textArea.style.left = 0;

    // Ensure it has a small width and height. Setting to 1px / 1em
    // doesn't work as this gives a negative w/h on some browsers.
    textArea.style.width = '2em';
    textArea.style.height = '2em';

    // We don't need padding, reducing the size if it does flash render.
    textArea.style.padding = 0;

    // Clean up any borders.
    textArea.style.border = 'none';
    textArea.style.outline = 'none';
    textArea.style.boxShadow = 'none';

    // Avoid flash of white box if rendered for any reason.
    textArea.style.background = 'transparent';


    textArea.value = text;

    document.body.appendChild(textArea);

    textArea.select();

    try {
    var successful = document.execCommand('copy');
    var msg = successful ? 'successful' : 'unsuccessful';
    //console.log('Copying text command was ' + msg + ": " + text);
    } catch (err) {
    console.log('Oops, unable to copy');
    }

    document.body.removeChild(textArea);
    }