what does the vue countdown progress bar do? the remaining time and total time of the countdown are obtained from the backend
<div class="progress_bg" >
<div class="progress" ></div>
</div>//300125
this.openTime.Seconds = 300
this.openTime.NextSeconds = 125
.progress _ bg width = 100
.progress width equals NextSeconds/Seconds
just update state
< hr >after knowing this, you can use computed to calculate properties, and it is more elegant to update progress width, automatically
<div class="progress_bg" >
<div class="progress" :style="{width:openTime.NextSeconds}"></div>
</div> add style to progress transition: 0.2s; there will be transition animation
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