HTML5多种动画效果加载图片

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- 3.0.0 2.2.0 2.1.4 2.1.3 2.1.2 2.1.1 2.1.0 2.0.3 2.0.2 2.0.1 2.0.0 1.12.0 1.11.3 1.11.2 1.11.1 1.11.0 1.10.2 1.10.1 1.10.0 1.9.1 1.9.0 1.8.3 1.8.2 1.8.1 1.8.0 1.7.2 1.7.1 1.7 1.6.4 1.6.2 1.6.1 1.4.4 1.4.3 1.4.2 1.4.1 1.4.0
- 1.7.3 1.7.2 1.7.1.0 1.7.0.0
- 2.0.0-beta.0 2.0.0-alpha.55 1.5.0-rc.0 1.4.8 1.4.0 1.3.20 1.2.29 1.1.5 1.0.8
- 1.8.3 1.7.0 1.6.0 1.5.2 1.4.4 1.3.3 1.2.4 1.1.7
- 1.10.4 1.9.7 1.8.10 1.7.8 1.6.3 1.5.4 1.4.6 1.3.3
- core1.6.0 core-compat1.6.0 core1.5.2 core-compat1.5.2 core-full-compat-yc1.4.5 core-full-compat1.4.5 core-full-nocompat-yc1.4.5 core-full-nocompat1.4.5
- 1.4.2 1.4.1 1.4.0 1.3.0 1.2.0 1.1.0
- 3.7.3 3.7.2 3.7.1 3.7.0 3.7 3.6.2 3.6.1 3.6

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- 1.4.5 1.4.4 1.4.3 1.4.2 1.4.1 1.4.0 1.3.2
- 1.11.4 1.11.3 1.11.2 1.11.1 1.11.0 1.10.4 1.10.3 1.10.2
- 3.3.6 3.3.5 3.3.0 3.2.0 2.3.2

jerry

HTML代码

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<!DOCTYPE html>
<head>
<meta charset="UTF-8">
<title>HTML5多种动画形式加载图像</title>
<script type="text/javascript">
var width,height;
var context,image,functionId;
var drawLeft,drawWidth;
var drawTop,drawHeight;
var spaceWidth,spaceHeight;
function window_onload()
{
     var canvas = document.getElementById('canvas');
     context = canvas.getContext('2d');
     image = new Image();
     image.src = "//ku.shouce.ren/files/images/201601/56a09607e0f90.jpg";
     width=canvas.width;
     height=canvas.height;
}
function btn1_onclick()
{
    context.fillStyle = "#EEEEFF";
    context.fillRect(0, 0,width,height);
    drawWidth=0;
    functionId=self.setInterval("drawImg1()",100);
    btnDisable();
}
function drawImg1()
{
    context.drawImage(image,0,0,drawWidth,image.height,0,0,drawWidth,image.height);
    drawWidth=drawWidth+2;
    if(drawWidth>width)
    {
        window.clearInterval(functionId);
        btnEnable();
    }
}
function btn2_onclick()
{
    context.fillStyle = "#EEEEFF";
    context.fillRect(0, 0,width,height);
    drawHeight=0;
    functionId=self.setInterval("drawImg2()",100);
    btnDisable();
}
function drawImg2()
{
    context.save();
    context.drawImage(image,0,0,image.width,drawHeight,0,0,image.width,drawHeight);
    drawHeight=drawHeight+2;
    if(drawHeight>height)
    {
        window.clearInterval(functionId);
        btnEnable();
    }
    context.restore();
}
function btn3_onclick()
{
    context.fillStyle = "#EEEEFF";
    context.fillRect(0, 0,width,height);
    drawLeft=width/2;
    drawWidth=0;
    functionId=self.setInterval("drawImg3()",100);
    btnDisable();
}
function drawImg3()
{
    context.save();
    context.drawImage(image,drawLeft,0,drawWidth,image.height,drawLeft,0,drawWidth,image.height);
    drawLeft=drawLeft-1;
    drawWidth=drawWidth+2;
    if(drawLeft<=0)
    {
        window.clearInterval(functionId);
        btnEnable();
    }
    context.restore();
}
function btn4_onclick()
{
    context.fillStyle = "#EEEEFF";
    context.fillRect(0, 0,width,height);
    drawTop=height/2;
    drawHeight=0;
    functionId=self.setInterval("drawImg4()",100);
    btnDisable();
}
function drawImg4()
{
    context.save();
    context.drawImage(image,0,drawTop,image.width,drawHeight,0,drawTop,image.width,drawHeight);
    drawTop=drawTop-1;
    drawHeight=drawHeight+2;
    if(drawTop<=0)
    {
        window.clearInterval(functionId);
        btnEnable();
    }
    context.restore();
}
function btn5_onclick()
{
    context.fillStyle = "#EEEEFF";
    context.fillRect(0, 0,width,height);
    spaceWidth=width/10;
    drawWidth=0;
    functionId=self.setInterval("drawImg5()",100);
    btnDisable();
}
function drawImg5()
{
     for(i=0;i<10;i++)
     {
         context.drawImage(image,0+i*spaceWidth,0,drawWidth,image.height,0+i*spaceWidth,0,drawWidth,image.height);
     }
    drawWidth+=1;

if(drawWidth>spaceWidth)
    {
       window.clearInterval(functionId);
       btnEnable();
    }
}
function btn6_onclick()
{
    context.fillStyle = "#EEEEFF";
    context.fillRect(0, 0,width,height);
    spaceHeight=height/10;
    drawHeight=0;
    functionId=self.setInterval("drawImg6()",100);
    btnDisable();
}
function drawImg6()
{
     context.save();
     context.clearRect(0, 0,width,height);
     for(i=0;i<10;i++)
     {
        context.drawImage(image,0,0+i*spaceHeight,image.width,drawHeight,0,0+i*spaceHeight,image.width,drawHeight);
     }
    drawHeight+=1;

if(drawHeight>spaceHeight)
    {
        window.clearInterval(functionId);
        btnEnable();
    }
    context.restore();
}
function btnDisable()
{
    document.getElementById("btn1").disabled="disabled";
    document.getElementById("btn2").disabled="disabled";
    document.getElementById("btn3").disabled="disabled";
    document.getElementById("btn4").disabled="disabled";
    document.getElementById("btn5").disabled="disabled";
    document.getElementById("btn6").disabled="disabled";
}
function btnEnable()
{
    document.getElementById("btn1").disabled="";
    document.getElementById("btn2").disabled="";
    document.getElementById("btn3").disabled="";
    document.getElementById("btn4").disabled="";
    document.getElementById("btn5").disabled="";
    document.getElementById("btn6").disabled="";
}
</script>
<style>
article{
    align:center;
}
canvas{
    background-color:white;
}
div#divLeft{
    width:150px;
    float:left;
}
div#divRight{
    float:left;
}
input[type='button']{
    width:140px;
}
</style>
</head>
<body onload="window_onload()">
<article>
<h1>HTML5动画形式装载图像</h1>
<div id="divLeft">
<input type="button" id="btn1" value="从左往右装载" onclick="btn1_onclick()"></button>
<input type="button" id="btn2" value="从上往下装载" onclick="btn2_onclick()"></button>
<input type="button" id="btn3" value="横向窗帘式拉开" onclick="btn3_onclick()"></button>
<input type="button" id="btn4" value="竖向窗帘式拉开" onclick="btn4_onclick()"></button>
<input type="button" id="btn5" value="横向百叶窗式展开" onclick="btn5_onclick()"></button>
<input type="button" id="btn6" value="纵向百叶窗式展开" onclick="btn6_onclick()"></button>
</div>
<div id="divRight">
<canvas id="canvas" width="120" height="100"></canvas>
</div>
</article>
</body>
</html>

CSS代码

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JS代码

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名称

HTML5多种动画效果加载图片

分类

HTML5代码

描述

HTML5多种动画形式加载图像，比如从左往右加载显示图片，或从上到下加载，或像窗帘一样横向拉开或竖向拉开，或像百叶窗一样展开等，每一种形式都是基于HTML5Canvas来实现，相信这些动画效果对您学习HTML5技术是有帮助的。