富文本和html标签的相互转换

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;
}

var tagText = "<p><b>123&456</b></p>";
console.log(HTMLEncode(tagText));

function HTMLDecode(text) { 
    var temp = document.createElement("div"); 
    temp.innerHTML = text; 
    var output = temp.innerText || temp.textContent; 
    temp = null; 
    return output; 
} 
var tagText = "<p><b>123&456</b></p>";
var encodeText = HTMLEncode(tagText);
console.log(encodeText);//<p><b>123&456</b></p>
console.log(HTMLDecode(encodeText));