javascript

1.
    parseInt(AAAA)//JAVASCRIPT(转换类型)

2.添加对象
var board = document.getElementById("board");
    var boardDiv = document.createElement("div");
    var span = document.createElement("span");
    span.id = "flag" + i;
    boardDiv.appendChild(span);

    var br = document.createElement("br");
    boardDiv.appendChild(br);

    var inputText = document.createElement("input");
    inputText.setAttribute("type","hidden");
    inputText.setAttribute("id","tag" + i);
    boardDiv.appendChild(inputText);
board.appendChild(boardDiv);

3.time
var now = new Date();
var hours = now.getHours();
var minutes = now.getMinutes();
var seconds = now.getSeconds();

4.
$('#rTime').css({'display':'none'});
$('#DIV1').html(".....");
$('#ID1').val("")
$("#span2").text("......");
$("#span1").css({ color: "#ff0011", background: "blue","margin-left": "10px", "background-color": "#ff0000" });
document.getElementById("ID").innerHTML="....";

5.
var str = "ssss1234";
var n = str.replace(/\d/g, ""); //n:ssss
var n = str.replace(/\D/g, ""); //n:1234