为什么clearinterval失效了？

[sinat_28561071]

    function show() {
        var oSlidertab = document.getElementById('slidertab');
        var oSlider = document.getElementById('Slides');
        var oSlili = oSlidertab.getElementsByTagName('li');
        var oSlidli = oSlider.getElementsByTagName('li');
        index = 0;
        timer = null;
        timer = setInterval(autoPlay, 2000);

        function autoPlay() {
            index + 1;
            if (++index >= oSlidli.length)
            { index = 0; }
            change(index);
        }

        function change(curIndex) {
            for (var i = 0; i < oSlili.length; i++) {
                oSlidli[i].style.display = "none";
                oSlili[i].className = "";
            }
            oSlidli[curIndex].style.display = "block";
            oSlili[curIndex].className = "sliderc";
        }

        oSlidertab.onmouseover = function () {
            clearInterval(timer);
        }
        for (var i = 0; i < oSlili.length; i++) {
            oSlili[i].onmouseover = function () {
                clearInterval(timer);
                index = this.innerText - 1;
                change(index);

            }
        }

    }

[KK3K2005]

在代码里面加个 输出 就知道 有没有了

[cocotsau]

timer = setInterval('autoPlay()', 2000);

[sinat_28561071]

help，定时器有效

[qq_24515921]

你把timer重新声明一下看看呢

[木头海上漂]

断点看看哪些步骤没有执行？是否报错
自己调试调试代码了。。。

[yagaping]

把 timer = null;在函数外面申明下！