Example of JavaScript implementing progress bar based on timer

This article mainly introduces the implementation of the progress bar function based on the timer in javascript. 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

The example in this article describes how JavaScript implements the progress bar function based on the timer. Share it with everyone for your reference, the details are as follows:

Timer in Javascript

windowThe method below the first linewindow. setInterval()Start the timer

1.setInterval(function(function), time(how often the function is executed, in milliseconds))

will repeatedly execute an item Operation

2.setTimeout is used to delay a period of time before performing a certain operation

setTimeout(function,time),setTimeout will not be repeated!

Stop the timer

setTimeout corresponds to clearTimeout (object) Clear the setTiemout object

setInterval corresponds Is clearInterval (object) Clear the setInterval object that has been set

Give a case:

Running effect:

When running the program, the progress bar on the web page will load. The loading speed is related to time!

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