经过JS实现HTML的转义与反转义

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;
}

function HTMLDecode(text) { 
    var temp = document.createElement("div"); 
    temp.innerHTML = text; 
    var output = temp.innerText || temp.textContent; 
    temp = null; 
    return output; 
}