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我正在尝试实现一种方法,其中在固定时间间隔后发生角度材料选项卡更改。我尝试在 JavaScript 中使用 setInterval,但它工作起来不是很可靠(选项卡更改是随机发生的)。下面发布的代码有效,但几个小时后浏览器冻结并且控制台显示此错误:

错误 RangeError:超出最大调用堆栈大小

togglePlay(): void {
    this.isAnimationPlaying = !this.isAnimationPlaying;
    if (this.isAnimationPlaying) {
        this.setIndex();
    } else {
        clearTimeout();
    }
}

setIndex() {
    this.selectedIndex = (this.selectedIndex + 1) % this.matTabLength;
    this.changeDetectorRef.detectChanges();
    if (this.isAnimationPlaying) {
        setTimeout(this.setIndex.bind(this), this.transitionSpeed);
    } else {
        clearTimeout();
    }
}

我尝试在 setTimeout 方法中传递 transitionSpeed ,如下所示:

setTimeout(this.setIndex, this.transitionSpeed, this.transitionSpeed);

setIndex(transitionSpeed: number, selectedIndex: number, matTabLength: number) {
    this.selectedIndex = (selectedIndex + 1) %.matTabLength;
    if (this.isAnimationPlaying) {
        setTimeout(this.setIndex, transitionSpeed, selectedIndex, matTabLength);
    } else {
        clearTimeout();
    }
}

但如果该方法被第二次调用,this.transitionSpeed 为空。

非常感谢任何帮助

编辑:

将代码更改为此,但几个小时后仍然出现相同的错误:

togglePlay(): void {
    this.isAnimationPlaying = !this.isAnimationPlaying;
    if (this.isAnimationPlaying) {
        this.setIndex();
    } else {
        clearTimeout(this.timerId);
    }
}

setIndex() {
    this.selectedIndex = (this.selectedIndex + 1) % this.matTabLength;
    this.changeDetectorRef.detectChanges();
    if (this.isAnimationPlaying) {
        clearTimeout(this.timerId);
        this.timerId = setTimeout(this.setIndex.bind(this), this.transitionSpeed);
    } else {
        clearTimeout(this.timerId);
    }
}

EDIT2: 在更改 Tab 时调用 TabChange 事件。代码:

    tabChanged(event) {
        this.themeClassesToRemove = Array.from(this.overlayContainer.getContainerElement().classList).filter((item: string) => item.includes('-template'));
        if (Array.from(this.overlayContainer.getContainerElement().classList).filter((item: string) => item.includes('-template')).length) {
            this.overlayContainer.getContainerElement().classList.remove(...this.themeClassesToRemove);
        }
        const label = event.tab.textLabel;
        if (label.toLocaleLowerCase() === '1') {
            this.templateService.default_template = this.templateService.grey_template;
        } else if (label.toLocaleLowerCase() === '2') {
            this.templateService.default_template = this.templateService.green_template;
        } else if (label.toLocaleLowerCase() === '3') {
            this.templateService.default_template = this.templateService.red_template;
        } else {
            this.templateService.default_template = this.templateService.blue_template;
        }
        this.overlayContainer.getContainerElement().classList.add(this.templateService.default_template);
        window.dispatchEvent(new Event('resize'));
    }

这是唯一的方法,在超时旁边调用。根据这篇文章,必须有一直被调用的递归方法。

4

1 回答 1

0

setTimeout. 返回一个计时器 ID,然后您可以使用clearTimeout它来清除它:

timerId = setTimeout(this.setIndex.bind(this), this.transitionSpeed);      

clearTimeout(timerId);
于 2019-07-16T19:46:07.120 回答