//转义

function HTMLEncode(html) {

    var temp = document.createElement("div");

    (temp.textContent != null) ? (temp.textContent = html) : (temp.innerText = html);

    var output = temp.innerHTML;

    temp = null;

    return output;

}

//反转义

function HTMLDecode(text) {

    var temp = document.createElement("div");

    temp.innerHTML = text;

    var output = temp.innerText || temp.textContent;

    temp = null;

    return output;

}