copy code from a prismjs code element with linebreaks in plain es5

prism js copy code

var codes = document.querySelectorAll('pre');

function copyCode(e) {
    var text = this.textContent || this.innerText,
        temp = document.createElement('textarea');
    document.body.appendChild(temp);
    temp.value = text;
    temp.select();
    document.execCommand('copy');
    temp.remove();
}

for (var i = 0; i < codes.length; i++) {
    var codeElem = codes[i];
    codeElem.addEventListener('click', copyCode);
}