description and source-codefunction copy(text, options) {
var debug, message, reselectPrevious, range, selection, mark, success = false;
if (!options) { options = {}; }
debug = options.debug || false;
try {
reselectPrevious = deselectCurrent();
range = document.createRange();
selection = document.getSelection();
mark = document.createElement('span');
mark.textContent = text;
mark.setAttribute('style', [
// reset user styles for span element
'all: unset',
// prevents scrolling to the end of the page
'position: fixed',
'top: 0',
'clip: rect(0, 0, 0, 0)',
// used to preserve spaces and line breaks
'white-space: pre',
// do not inherit user-select (it may be `none`)
'-webkit-user-select: text',
'-moz-user-select: text',
'-ms-user-select: text',
'user-select: text',
].join(';'));
document.body.appendChild(mark);
range.selectNode(mark);
selection.addRange(range);
var successful = document.execCommand('copy');
if (!successful) {
throw new Error('copy command was unsuccessful');
}
success = true;
} catch (err) {
debug && console.error('unable to copy using execCommand: ', err);
debug && console.warn('trying IE specific stuff');
try {
window.clipboardData.setData('text', text);
success = true;
} catch (err) {
debug && console.error('unable to copy using clipboardData: ', err);
debug && console.error('falling back to prompt');
message = format('message' in options ? options.message : defaultMessage);
window.prompt(message, text);
}
} finally {
if (selection) {
if (typeof selection.removeRange == 'function') {
selection.removeRange(range);
} else {
selection.removeAllRanges();
}
}
if (mark) {
document.body.removeChild(mark);
}
reselectPrevious();
}
return success;
}