How to create a delayer in JavaScript-JS Tutorial-php.cn

How to create a delayer in JavaScript

青灯夜游

Release： 2021-10-15 16:20:40

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In JavaScript, you can use the setTimeout() function to set a delayer, which is used to call a function or calculate an expression after a specified number of milliseconds, with the syntax "setTimeout(code,millisec)".

How to create a delayer in JavaScript

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

In JavaScript, you can use the setTimeout() function to set a delayer.

The setTimeout() function is used to execute certain codes after a specified time (in milliseconds). The code will only be executed once.

Syntax format:

setTimeout(code,millisec)

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Parameter description:

code: required. The string of JavaScript code to be executed after the function to be called. Can be required for a function
#millisec. The number of milliseconds to wait before executing code.

Code example:

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>JavaScript</title>
</head>
<body>
    <script type="text/javascript">
        var myFun = function (str = &#39;JavaScript&#39;){
            document.write(str + "<br>");
        };
        setTimeout(myFun, 500, &#39;Hello&#39;);
        setTimeout(myFun, 1000);
        setTimeout(function(){
            document.write("定时器<br>");
        }, 1500)
        setTimeout("document.write(\"setTimeout()\")", 2000);
    </script>
</body>
</html>

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Rendering:

How to create a delayer in JavaScript

[Recommended learning: JavaScript advanced tutorial】

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