copy whole html table to clipboard javascript

Question

I have write javascript to select the table but I want to now automaticaly copy it after the click of the button.Please help me.My javascript is like this.

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Answer 1

function selectElementContents(el) {
var body = document.body, range, sel;
if (document.createRange && window.getSelection) {
    range = document.createRange();
    sel = window.getSelection();
    sel.removeAllRanges();
    try {
        range.selectNodeContents(el);
        sel.addRange(range);
    } catch (e) {
        range.selectNode(el);
        sel.addRange(range);
    }
} else if (body.createTextRange) {
    range = body.createTextRange();
    range.moveToElementText(el);
    range.select();
}
document.execCommand("Copy");}