This article mainly introduces JavaScript to implement the progress bar function based on the timer. It briefly analyzes the function and usage of the JavaScript timer and gives an example of the progress bar function based on the timer. Friends who need it can refer to it. I hope it can help. to everyone.
Timer in Javascript
The method below window is window.setInterval() to start the timer
1.setInterval(function(function),time(every other How long to execute the function once, the unit is milliseconds))
will repeatedly perform an operation
2.setTimeout is used to delay a period of time before performing an operation
setTimeout (function, time), setTimeout will not be repeated!
Stop the timer
setTimeout corresponds to clearTimeout(object) Clear the set setTiemout object
setInterval corresponds to clearInterval(object) Clear the setInterval object
Give a case:
www.jb51.net js进度条
Running effect:
When running the program, the progress bar on the web page will load, loading The speed is related to time!
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