想在循环中隔10秒执行一个函数，请教如何写

我循环取出一些数据，每取出一组数据就隔10秒执行一遍show()函数，我试着如下写法，没能实现，自己的js水平有限，望有经验的朋友给予指点，谢谢
    WebServiceSendData.Gettrace(onSuccessed);
       function onSuccessed(result)
        {
            for(var i=0;i<result.length;i++)
            {
                x=result[i]["Lat"];
                y=result[i]["Lng"];
                setInterval("show(x,y)", 10000);
            }
        }
function show(x,y)
{
  ..........
}

解决方案 »

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不能在循环中这样做，你可以在show方法中动态的获取x，y，然后10000时间后，在执行var k=0;
  var x=result[k]["Lat"];
  var y=result[k]["Lng"];

  show(k);//首次执行
  k++;
  setInterval("show("+k+")", 10000);
  function show(k)
{
  if(k<result.length)
  {
    x=result[k]["Lat"];
y=result[k]["Lng"];    你的方法..........   k++;
  }
  else
  {
方法不再执行
  }
}
写错了，这样就行了
setInterval("show()", 10000);
<TITLE> New Document </TITLE>
  <META NAME="Generator" CONTENT="EditPlus">
  <META NAME="Author" CONTENT="">
  <META NAME="Keywords" CONTENT="">
  <META NAME="Description" CONTENT="">
</HEAD> <BODY>
  <SCRIPT LANGUAGE="JavaScript">
  
  </SCRIPT>
</BODY>
</HTML>
setInterval  是一个系统自带的函数
应该是在JS加载的时候执行一次,不能动态的加载吧
你这样是不行滴。你错误地理解了setInterval的意思勒。函数应该写在setInterval里面，这样才能依具setInterval中设置的时间间隔来调用函数。例：s=setInterval(function execute(){xxx},5000);每5秒执行一次execute()函数
<TITLE> New Document </TITLE>
  <META NAME="Generator" CONTENT="EditPlus">
  <META NAME="Author" CONTENT="">
  <META NAME="Keywords" CONTENT="">
  <META NAME="Description" CONTENT="">
</HEAD> <BODY>
  <SCRIPT LANGUAGE="JavaScript">
  
  </SCRIPT>
</BODY>
</HTML>
其实使用setTimeout更容易控制。
直接运行例子就知道了，你需要的函数是：timedChunk<!doctype html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Array Processing Test</title>
<style type="text/css">
    th { text-align: left; }
</style>
</head>
<body>

<button onclick="reset()" id="resetBtn" autocomplete="off">重置</button>
<button onclick="test1()" id="test1Btn" autocomplete="off">传统方式加载</button>
<button onclick="test2()" id="test2Btn" autocomplete="off">分时优化加载</button>

<div style="border: 1px solid black; width: 500px; margin: 10px 0; color: white">
    <div id="time-progress" style="background-color: navy; height: 16px; width: 0"></div>
</div>

<table id="demo">
    <col width="200" />
    <col width="300" />
    <tbody>
    <tr>
        <th>商品名称</th>
        <th>商品描述</th>
    </tr>
    </tbody>
</table>
<script type="text/javascript">

    // 模拟数据
    var JSON_DATA = [], i, len;
    for (i = 1; i <= 5000; ++i) {
        JSON_DATA.push(["商品名称" + i, "商品描述" + i]);
    }

    // 通用操作
    var demo = document.getElementById("demo"),
        tbody = demo.tBodies[0],
        tr, td, n = 0,
        addItem = function(data) {
            tr = document.createElement("tr");

            td = document.createElement("td");
            td.appendChild(document.createTextNode(data[0]));
            tr.appendChild(td);

            td = document.createElement("td");
            td.appendChild(document.createTextNode(data[1]));
            tr.appendChild(td);

            tbody.appendChild(tr);
            if(++n % 10 == 0)
                progressing();
        },
        reset = function() {
            resetBtn.disabled = true;

            if(window.ActiveXObject) { // ie
                var temp = document.createElement("div");
                temp.innerHTML  = "<table><tbody><tr><th>商品名称</th><th>商品描述</th></tr></tbody></table>";
                demo.replaceChild(temp.firstChild.tBodies[0], tbody);
                tbody = demo.tBodies[0];
            } else {
                tbody.innerHTML = "<tr><th>商品名称</th><th>商品描述</th></tr></tbody>";
            }

            n = 0;
            progress.innerHTML = "";
            progress.style.width = 0;

            test1Btn.disabled = false;
            test2Btn.disabled = false;
        },
        progressing = function() {
            progress.style.width = (progress.offsetWidth + 1) + "px";
        },
        resetBtn = document.getElementById("resetBtn"),
        test1Btn = document.getElementById("test1Btn"),
        test2Btn = document.getElementById("test2Btn"),
        progress = document.getElementById("time-progress");

    // 传统加载
    function test1() {
        resetBtn.disabled = true;
        test1Btn.disabled = true;
        test2Btn.disabled = true;

        var start = +new Date(), end;
        for (i = 0, len = JSON_DATA.length; i < len; ++i) {
            addItem(JSON_DATA[i]);
        }
        end = +new Date();
        progress.innerHTML = end - start;

        resetBtn.disabled = false;
    }

    // 分时加载
    function test2() {
        resetBtn.disabled = true;
        test1Btn.disabled = true;
        test2Btn.disabled = true;

        var start = +new Date(), end;
        timedChunk(JSON_DATA, addItem, null, function() {
            resetBtn.disabled = false;
            end = +new Date();
            progress.innerHTML = end - start;

        });
    }

    // 通用分时处理函数
    function timedChunk(items, process, context, callback) {
        var todo = items.concat(), delay = 25;

        setTimeout(function() {
            var start = +new Date();

            do {
                process.call(context, todo.shift());
            } while(todo.length > 0 && (+new Date() - start < 50));

            if(todo.length > 0) {
                setTimeout(arguments.callee, delay);
            } else if(callback) {
                callback(items);
            }

        }, delay);
    }

</script>
</body>
</html>
WebServiceSendData.Gettrace(onSuccessed);
  function onSuccessed(result)
  {
  for(var i=0;i<result.length;i++)
  {
  x=result[i]["Lat"];
  y=result[i]["Lng"];
  show(x,y);
  }
  }
function show(x, y)
{
  x=result[i]["Lat"];
  y=result[i]["Lng"];
  setInterval("show(x,y)", 10000);
}