Copy text to clipboard

copy.js

'use strict';

/**
 * Copy text to clipboard
 * @param {string | Element} text
 * @return {boolean}
 */
const copy = (text = '') => {
    if (text instanceof Function)
        text = text();
    let elem = text;
    if (!(text instanceof Element)) {
        // elem = document.createTextNode(text);
        elem = document.createElement('textarea');
        elem.setAttribute('readonly', true);
        elem.style.cssText = 'position: absolute; left: -99999em';
        elem.value = text;
        document.documentElement.appendChild(elem);
    }
    const range = document.createRange();
    range.selectNode(elem);
    const sel = window.getSelection();
    sel.removeAllRanges();
    sel.addRange(range);
    if (elem instanceof HTMLInputElement) {
        elem.select();
    }
    try {
        const stat = document.execCommand('copy');
        sel.removeAllRanges();
        return stat;
    } catch (e) {
        return false;
    }
};