<html>
<head>
<title></title>
</head>
<body>
<script type="text/javascript">var startX,startY,endX,endY;
var sign=false;function pointRandom(){
if(sign){
startX=parseInt(500*Math.random());
startY=parseInt(500*Math.random());
drawLine(startX,startY,endX,endY);
}
else{
startX=0;
startY=0;
endX=parseInt(500*Math.random());
endY=parseInt(500*Math.random());
drawLine(startX,startY,endX,endY);
sign=true;
}
endX=startX;
endY=startY;
}
function start(){
inst=setInterval("pointRandom()",1000);
//setY(50,50,100,200);
}function drawLine(startX,startY,endX,endY){
var coffi=(endY-startY)/(endX-startX);
var move = startY - coffi * startX ;
for(var i = startX ; i < endX ;i += 1){
drawPoint(i,coffi*i+move);
}
}
function drawPoint(x,y){
var d = document.createElement("div");
d.style.left=x;
d.style.top=y;
d.style.width=0;
d.style.height=0;
d.style.position="absolute";
d.style.borderColor="#787878";
d.style.borderWidth=1;
d.style.borderStyle="solid";
document.body.appendChild(d);
}
</script><input type="button" value="开始统计" onclick="startPaint();">
</body>
</html>
html
<head>
<title></title>
</head>
<body>
<script type="text/javascript">var startX,startY,endX,endY;
var sign=false;function pointRandom(){
if(sign){
startX=parseInt(500*Math.random());
startY=parseInt(500*Math.random());
drawLine(startX,startY,endX,endY);
}
else{
startX=0;
startY=0;
endX=parseInt(500*Math.random());
endY=parseInt(500*Math.random());
drawLine(startX,startY,endX,endY);
sign=true;
}
endX=startX;
endY=startY;
}
function start(){
inst=setInterval("pointRandom()",1000);
//setY(50,50,100,200);
}function drawLine(startX,startY,endX,endY){
var coffi=(endY-startY)/(endX-startX);
var move = startY - coffi * startX ;
for(var i = startX ; i < endX ;i += 1){
drawPoint(i,coffi*i+move);
}
}
function drawPoint(x,y){
var d = document.createElement("div");
d.style.left=x;
d.style.top=y;
d.style.width=0;
d.style.height=0;
d.style.position="absolute";
d.style.borderColor="#787878";
d.style.borderWidth=1;
d.style.borderStyle="solid";
document.body.appendChild(d);
}
</script><input type="button" value="开始统计" onclick="startPaint();">
</body>
</html>
html
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inst=setInterval("pointRandom()",1000);
//setY(50,50,100,200);
}