我正在调试一段代码,我认为该代码存在内存泄漏。在 Google Chrome 中运行代码时,浏览器在一段时间后崩溃。我坚信以下代码(为了简单起见,仅附加模板,而不附加整个代码)导致了该问题。当我使用 Chrome 开发者工具的“时间轴”选项卡并观察实际应用程序中的内存使用情况和内存峰值时,情况会如此。如果您注意到播放正在调用transistionTo的代码,并且transistionTo有一个setTimeout函数再次调用播放。我认为内存没有因此被释放。有人可以帮我解决这个问题吗?
var htmlRotatorTimer = '';
function play(src){
// some code here
transitionTo("gallery", "counter");
// some code here
}
function transitionTo(gallery,index) {
// some code here
clearTimeout(htmlRotatorTimer);
htmlRotatorTimer = setTimeout( function(){ play(); }, 1000 );
// some code here
}
play();
这是代码的较长版本
// utility for loading slides
function transitionTo(gallery,index) {
// preloader (optional)
var counterMin = 0;
if (config.preloader) {
counterMin = 1;
if (gallery.length < 3) pause('');
}
var oldCounter = counter;
if((counter >= gallery.length) || (index >= gallery.length)) { counter = counterMin; var e2b = true; }
else if((counter < counterMin) || (index < 0)) { counter = gallery.length-1; var b2e = true; }
else { counter = index; }
// added attr speed in div's
//htmlRotatorTimer = '';
var itemSpeed = Number($(gallery[counter]).attr("speed") != undefined ? $(gallery[counter]).attr("speed") : config.speed);
//htmlRotatorTimer = setInterval(function(){ play(); },itemSpeed);
clearTimeout(htmlRotatorTimer);
htmlRotatorTimer = setTimeout( function(){ play(); }, itemSpeed );
var rmkName = $(gallery[counter].children).attr("id") != undefined ? 'RMK_' + $(gallery[counter].children).attr("id") : '';
var isHtml5 = false;
if (rmkName != '' && eval ('typeof '+ rmkName) == 'object') {
rmkObj = eval(rmkName);
isHtml5 = rmkObj.rmkType == 'html5' ? true : false;
//console.log('html5 is' + rmkObj.rmkType,'obj name' + rmkName, 'typeof:' +(typeof rmkObj));
}
if (config.effect=='fade') {
$(gallery[counter])
.clone()
.appendTo($cont)
.hide()
.fadeIn(config.changeSpeed,function(){$('#showbanners.rmkbanner').css({ 'visibility': 'visible'});if($.browser.msie)this.style.removeAttribute('filter');});
if($cont.children().length>1){
$cont.children().eq(0).css('position','absolute').fadeOut(config.changeSpeed,function(){$(this).remove();});
};
} else if (config.effect=='none') {
$(gallery[counter])
.appendTo($cont);
if($cont.children().length>1){
$cont.children().eq(0).remove();
};
};
// update active class on slide link
if(config.links){
$('.'+uniqueClass+'-active').removeClass(uniqueClass+'-active jshowoff-active');
$('.'+uniqueClass+'-slidelinks a').eq(counter).addClass(uniqueClass+'-active jshowoff-active');
};
// reset for html5 objects only
if (isHtml5) {
rmkObj.preload = 'nopreload';
rmkObj.Reset();
}
};// end function transistionTo
// is the rotator currently in 'play' mode
function isPlaying(){
return $('.'+uniqueClass+'-play').hasClass('jshowoff-paused') ? false : true;
};
// start slide rotation on specified interval
function play(src) {
if (!finalStop) {
if (!isBusy()) {
counter++;
transitionTo(gallery, counter);
if (src == 'hover' || !isPlaying()) {
//htmlRotatorTimer = setInterval(function(){ play(); },config.speed);
clearTimeout(htmlRotatorTimer);
htmlRotatorTimer = setTimeout(function(){
play();
}, config.speed);
}
if (!isPlaying()) {
$('.' + uniqueClass + '-play').text(config.controlText.pause).removeClass('jshowoff-paused ' + uniqueClass + '-paused');
}
};
};
};
最佳答案
我相信你在transitionTo函数中对play的调用是错误的。你没有提供论据。顺便问一下,为什么还要在外面调用 play() 呢?如果可以的话,请贴出完整的代码。我不确定您为什么将计数器字符串传递给transitionTo。一个建议是在 play 方法中使用 setInterval 方法,如下所示
function play(){
//existing logic
setInterval(function(){transitionTo("gallery","counter");},1000);
}
关于JavaScript setTimeout 内存问题,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/8818311/