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	uni-app引入使用uView
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								yudao-ui-app/uni_modules/uview-ui/libs/function/debounce.js
									
									
									
									
									
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							| @@ -0,0 +1,29 @@ | ||||
| let timeout = null | ||||
|  | ||||
| /** | ||||
|  * 防抖原理:一定时间内,只有最后一次操作,再过wait毫秒后才执行函数 | ||||
|  * | ||||
|  * @param {Function} func 要执行的回调函数 | ||||
|  * @param {Number} wait 延时的时间 | ||||
|  * @param {Boolean} immediate 是否立即执行 | ||||
|  * @return null | ||||
|  */ | ||||
| function debounce(func, wait = 500, immediate = false) { | ||||
|     // 清除定时器 | ||||
|     if (timeout !== null) clearTimeout(timeout) | ||||
|     // 立即执行,此类情况一般用不到 | ||||
|     if (immediate) { | ||||
|         const callNow = !timeout | ||||
|         timeout = setTimeout(() => { | ||||
|             timeout = null | ||||
|         }, wait) | ||||
|         if (callNow) typeof func === 'function' && func() | ||||
|     } else { | ||||
|         // 设置定时器,当最后一次操作后,timeout不会再被清除,所以在延时wait毫秒后执行func回调方法 | ||||
|         timeout = setTimeout(() => { | ||||
|             typeof func === 'function' && func() | ||||
|         }, wait) | ||||
|     } | ||||
| } | ||||
|  | ||||
| export default debounce | ||||
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