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How to set image size with JavaScript

藏色散人Original: 2021-07-01 10:36:194932browse

How to set the image size in JavaScript: first create an HTML sample file; then import the image through img; and finally dynamically change the image size through the "setInterval(function warp(){...}" method.

The operating environment of this article: windows7 system, javascript version 1.8.5, DELL G3 computer

How to set the image size with JavaScript?

JavaScript to change image size

<!DOCTYPE html>
    <html>
    <head>
        <meta charset="UTF-8">
        <title>动态改变图片大小</title>
        <script language="JavaScript">
            window.function () {
                var n=2;
                var r=1;
                var control=true;
                setInterval(function warp(){
                    if(control==true){
                        n++;
                    }
                    else{
                        n--;
                    }
                    if(n==300)control=false;//
                    if(n==1)control=true;
                    if(control==true){
                        oPic.width+=1;
                        oPic.height+=1;
                    }
                    else{
                        oPic.width-=1;
                        oPic.height-=1;
                    }
                },30);//每隔30毫秒调用一次warp函数
            }
        </script>
    </head>
    <body bgcolor="aqua">
        <img   src="myImages/5.jpg" name="oPic"   style="max-width:90%" alt="How to set image size with JavaScript" >
    <!--放在当前目录下的图片-->
    </body>
</html>

How to set image size with JavaScript

Recommended study: "javascript Advanced Tutorial"

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