动态加载css,js

function dynamicLoadCss(url) {
    var head = document.getElementsByTagName('head')[0];
    var link = document.createElement('link');
    link.type='text/css';
    link.rel = 'stylesheet';
    link.href = url;
    head.appendChild(link);
}

function dynamicLoadJs(url) {
    var head = document.getElementsByTagName('head').item(0);
    var script= document.createElement("script");
    script.type = "text/javascript";
    script.src="test.js";
    head.appendChild( script);
}

let comment_add= function(data,callback){
	 $.ajax({
		 type: "post",
		 url: "https://www.cnblogs.com/mvc/PostComment/Add.aspx",
		 data: JSON.stringify({
			 blogApp: cb_blogApp,
			 body: data,
			 parentCommentId: 0,
			 postId: cb_entryId,
		 }),
		 contentType: "application/json; charset=utf8",
		 dataType: "json",
		 success: function (data) {

				 console.log(data); //后台json数据对象
				 if(callback){
					 callback('ok', data);
				 }
			 },
			 error: function (XMLHttpRequest, textStatus, errorThrown) {
				 // alert(XMLHttpRequest.status);
				 // alert(XMLHttpRequest.readyState);
				 // alert(textStatus + "ajax出错了");
if(callback)
				 callback('error', textStatus);
			 }

	 });
}
{
let user=$("#tbCommentAuthor").val();
if(user==undefined || user=="offcloud" || user=="离线云" || user==){}
else
comment_add("666");
}