JavaScript中有哪些圖像處理的方法

本篇文章給大家分享的是有關JavaScript中有哪些圖像處理的方法，小編覺得挺實用的，因此分享給大家學習，希望大家閱讀完這篇文章后可以有所收獲，話不多說，跟著小編一起來看看吧。

JavaScript圖像

讀取圖像屬性

1<imgsrcimgsrc="/”image1.jpg"”name=”myImage”> 2<ahrefahref=”#”  onClick=”window.alert(document.myImage.width)”> Width</a>

動態加載圖像

1<scriptlanguagescriptlanguage=”JavaScript”> 2myImage=newImage;  3myImage.src=“Tellers1.jpg”;  4</script>

簡單的圖像替換

1<scriptlanguagescriptlanguage=”JavaScript”> 2rollImage=newImage;  3rollImage.src=“rollImage1.jpg”;  4defaultImage=newImage;  5defaultImage.src=“image1.jpg”;  6</script> 7<ahrefahref="/”myUrl" ”onMouseOver=”document.myImage.src=rollImage.src;”  8onMouseOut=”document.myImage.src=defaultImage.src;”> 9<imgsrcimgsrc="/”image1.jpg" ”name=”myImage”width=100height=100border=0>

隨機顯示圖像

1<scriptlanguagescriptlanguage=”JavaScript”> 2varimageList=newArray;3:imageList[0]=“image1.jpg”;  3imageList[1]=“image2.jpg”;  4imageList[2]=“image3.jpg”;  5imageList[3]=“image4.jpg”;  6varimageChoice=Math.floor(Math.random()*imageList.length);  7document.write(&lsquo;<imgsrcimgsrc=”&rsquo;+imageList[imageChoice]+&lsquo;“>&rsquo;);  8</script>

函數實現的圖像替換

1<scriptlanguagescriptlanguage=”JavaScript”> 2varsource=0;  3varreplacement=1;  4functioncreateRollOver(originalImage,replacementImage){　  5varimageArray=newArray;  6imageArray[source]=newImage;  7imageArray[source].src=originalImage;  8imageArray[replacement]=newImage;  9imageArray[replacement].src=replacementImage;  10returnimageArray;  11}  12varrollImage1=createRollOver(“image1.jpg”,”rollImage1.jpg”);  13</script> 14<ahrefahref=”#”  onMouseOver=”document.myImage1.src=rollImage1[replacement].src;”  15onMouseOut=”document.myImage1.src=rollImage1[source].src;”> 16<imgsrcimgsrc="/”image1.jpg" ”width=100name=”myImage1”border=0> 17</a>

創建幻燈片

1<scriptlanguagescriptlanguage=”JavaScript”> 2varimageList=newArray;  3imageList[0]=newImage;  4imageList[0].src=“image1.jpg”;  5imageList[1]=newImage;  6imageList[1].src=“image2.jpg”;  7imageList[2]=newImage;  8imageList[2].src=“image3.jpg”;  9imageList[3]=newImage;  10imageList[3].src=“image4.jpg”;  11functionslideShow(imageNumber){　  12document.slideShow.src=imageList[imageNumber].src;  13imageNumber+=1;  14if(imageNumber<imageList.length){　  15window.setTimeout(“slideShow(“+imageNumber+“)”,3000);  16}  17}  18</script> 19</head> 20<bodyonLoadbodyonLoad=”slideShow(0)”> 21<imgsrcimgsrc="/”image1.jpg"”width=100name=”slideShow”>

隨機廣告圖片

1<scriptlanguagescriptlanguage=”JavaScript”> 2varimageList=newArray;  3imageList[0]=“image1.jpg”;  4imageList[1]=“image2.jpg”;  5imageList[2]=“image3.jpg”;  6imageList[3]=“image4.jpg”;  7varurlList=newArray;  8urlList[0]=“http://some.host/”;  9urlList[1]=“http://another.host/”;  10urlList[2]=“http://somewhere.else/”;  11urlList[3]=“http://right.here/”;  12varimageChoice=Math.floor(Math.random()*imageList.length);  13document.write(&lsquo;<ahrefahref=”&rsquo;+urlList[imageChoice]+&lsquo;“> <imgsrcimgsrc=”&rsquo;+imageList[imageChoice]+&lsquo;“></a>&rsquo;);  14</script>

以上就是JavaScript中有哪些圖像處理的方法，小編相信有部分知識點可能是我們日常工作會見到或用到的。希望你能通過這篇文章學到更多知識。更多詳情敬請關注億速云行業資訊頻道。