


In the lottery roulette project developed by Vue, how to solve the problem that the isActive class does not take effect during the rolling process?
Solve the problem of isActive class failure when the Vue lottery roulette is rolling
This article discusses the problem that isActive
class fails during the rolling process in the lottery roulette project developed by Vue, resulting in poor rolling effect of the roulette. The problem manifests as isActive
class only takes effect at the beginning and end of the scrolling, and cannot be displayed normally during the scrolling process.
Problem analysis and solutions
The root cause of the problem lies in the update mechanism of isActive
state in the roulette rolling logic ( roll
method) conflicts with the asynchronous update mechanism of Vue responsive system. The following provide improvements:
-
Synchronous
isActive
status update: The original code usesthis.$set
to updateisActive
, but there may be an asynchronous update delay. It is recommended to combineVue.nextTick
to ensure that the DOM is updated before performing subsequent operations to ensure synchronization:roll() { // ...Other codes... this.initData.awardConfigList.forEach(item => this.$set(item, 'isActive', false)); this.$set(this.initData.awardConfigList[this.indent], 'isActive', true); Vue.nextTick(() => { this.roll(); // Recursively call the roll method to implement animation}); }
-
Optimize animation using
requestAnimationFrame
: The original code usessetTimeout
to control scrolling, which may cause the animation to be unsmooth. It is recommended to userequestAnimationFrame
instead, which can better synchronize with the browser rendering mechanism and achieve smoother animation effects:roll() { // ...Other codes... // Use requestAnimationFrame instead of setTimeout this.timers = requestAnimationFrame(() => this.roll()); }
-
Add CSS transition effect: Make sure that the CSS style corresponding to
isActive
class contains transition effect, for example:.maskBox { transition: all 0.3s ease; /* or other transition attributes*/ }
This can make
isActive
state changes smoother and more natural.
An example of improved roll
method (integrating the above suggestions):
roll() { this.times = 1; this.indent = (this.times - 1) % 9; // ... (Other logic remains unchanged) ... this.initData.awardConfigList.forEach(item => this.$set(item, 'isActive', false)); this.$set(this.initData.awardConfigList[this.indent], 'isActive', true); this.timers = requestAnimationFrame(() => this.roll()); }
Through the above improvements, the problem of isActive
class failure during the scrolling process can be effectively solved, the user experience can be improved, and the lottery roulette scrolling is smoother and more natural. Remember to add the necessary transition effects to your CSS.
The above is the detailed content of In the lottery roulette project developed by Vue, how to solve the problem that the isActive class does not take effect during the rolling process?. For more information, please follow other related articles on the PHP Chinese website!

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