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How to create a delayer in JavaScript
- 青灯夜游Original
- 2021-10-15 16:20:4011810browse
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)".
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)
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 = 'JavaScript'){
document.write(str + "<br>");
};
setTimeout(myFun, 500, 'Hello');
setTimeout(myFun, 1000);
setTimeout(function(){
document.write("定时器<br>");
}, 1500)
setTimeout("document.write(\"setTimeout()\")", 2000);
</script>
</body>
</html>Rendering:
[Recommended learning: JavaScript advanced tutorial】
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