延迟加载，页面离开的时候清空
this.timer = setTimeout(() => {
this.lazy_display = true
}, 1800)
beforeDestroy() {
clearTimeout(this.timer);
this.timer = null;
},
延迟加载，页面离开的时候清空
this.timer = setTimeout(() => {
this.lazy_display = true
}, 1800)
beforeDestroy() {
clearTimeout(this.timer);
this.timer = null;
},
本文标题：clearTimeout
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