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javascript (用setTimeout而非setInterval)_javascript技巧

程序员文章站 2022-05-24 13:27:18
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复制代码 代码如下:

var num = 0;
var max = 10;
function incrementNumber() {
num++;
//if the max has not been reached, set another timeout
if (num setTimeout(incrementNumber, 500);
} else {
alert(“Done”);
}
}
setTimeout(incrementNumber, 500);

如果用setInterval 可能出现 下次调用会在前一次调用前调用 (

True intervals are rarely used in production environments because it ' s possible that one interval will begin before the previous one has finished executing)