所以我有这个功能：

function populate(selector,snippet,location) {
    var OGsnippet = $('snippet#' + snippet).children().clone().appendTo(selector);
}

它被这样称呼：populate('section#main articles article:not(".ad")','socmed-articles');或populate('section div.articles.news article:not(".ad")','socmed-articles');

我正在尝试将其转换为原始javascript。我尝试过：

function populate(selector,location) {
    var snippet = (document.querySelector('snippet#' + snippet).children)[0].cloneNode(true); //printing snippet yields a span with a class socmed-articles
    document.querySelector(selector).append(snippet);
}

但是我得到Uncaught DOMException: Failed to execute 'querySelector' on 'Document': 'section#main articles article:not(".ad")' is not a valid selector