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                [TOC] ## **js中的定時器有哪些?以及它們之間的區別** * setTimeout只在**指定時間后執行一次** ~~~ setInterval(function (a) { alert(a); }, 3000,1); ~~~ > 3000后的1是傳參,是a值 * setInterval以指定時間為**周期循環執行** ### 定時器的實例:隔段3秒就打印一個1 ``` <script> var a = 1; setTimeout(funtion(a){ console.log(a) },1000) </script> ```
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