У меня есть программа ЭКГ, которая отображает ЭКГ после принятия значений из массивов. Открыв консоль (нажав кнопку f12) в Firefox, она показывает, что журнал продолжает писать бесконечно даже после того, как построены все 12 графиков. Это не должно произойти! Есть 12 массивов с 1250 элементами. Я даю один массив из-за предела слова здесь. Нажав кнопку «Click Me», вы можете нарисовать график, используя холст. Пожалуйста, примите значения, приведенные в нижней части вопроса для справки. Пожалуйста, помогите мне найти причину этого переполнения. Я новичок. Код:console.log() работает бесконечно даже после завершения завершения программы
<!doctype html>
<html>
<head>
<script>
function byId(id,parent){return (parent == undefined ? document : parent).getElementById(id);}
window.addEventListener('load', onLoadd, false);
var YRatio=0.75;
var nPointsPerFrame = 10;//This value determines the speed. Higher value means more speed.
var Lead_1 = [];
function onLoadd(evt)
{
drawBkg(byId('canvas'), 3.78, "0.35", "black");
}
function onDocLoaded(evt)
{
//Markings();
drawcurFrame_Lead_1.apply(this, Lead_1);
}
function drawBkg(canvasElem, squareSize, minorLineWidthStr, lineColStr)
{
var nLinesDone = 0;
var i, curX, curY;
var ctx = canvasElem.getContext('2d');
ctx.clearRect(0,0,canvasElem.width,canvasElem.height);
// draw the vertical lines
curX=0;
ctx.strokeStyle = lineColStr;
while (curX < canvasElem.width)
{
ctx.lineWidth = minorLineWidthStr;
ctx.beginPath();
ctx.moveTo(curX, 0);
ctx.lineTo(curX, canvasElem.height);
ctx.stroke();
curX += squareSize;
nLinesDone++;
}
// draw the horizontal lines
curY=0;
nLinesDone = 0;
while (curY < canvasElem.height)
{
ctx.lineWidth = minorLineWidthStr;
ctx.beginPath();
ctx.moveTo(0, curY);
ctx.lineTo(canvasElem.width, curY);
ctx.stroke();
curY += squareSize;
nLinesDone++;
}
}
//FIRST GRAPH Lead_1
// position that will be treated as 0,0 when drawing our points.
var originX_Lead_1=46;
var originY_Lead_1=16;
function Draw_Lead_1(nSamplesToDraw, firstSample, lineWidthStr, lineColourStr)
{
var can = byId('canvas');
var ctx = can.getContext('2d');
ctx.strokeStyle = lineColourStr;
ctx.lineWidth = lineWidthStr;
console.log(firstSample);
ctx.beginPath();
ctx.moveTo(originX_Lead_1+(firstSample*0.377), originY_Lead_1+(Lead_1[firstSample-1]*YRatio));
for (i=0; i<nSamplesToDraw; i++)
{
var curSample = Lead_1[i + firstSample];// calculate y coordinate
ctx.lineTo(originX_Lead_1+((firstSample+i)*0.377), originY_Lead_1+(curSample*YRatio));
}
ctx.stroke();
}
var curFrame_Lead_1=0;//Starts with frame 0.
function drawcurFrame_Lead_1()
{
Draw_Lead_1(nPointsPerFrame, nPointsPerFrame*curFrame_Lead_1, "0.75", "blue");//Calling function to draw the graph
curFrame_Lead_1+=1;//Frame is incremented one by 1.
requestAnimationFrame(drawcurFrame_Lead_1);
}
</script>
</head>
<body>
<div id='txt'></div>
<canvas id="canvas" width="1250" height="800"></canvas>
<button onclick="onDocLoaded()">Click Me</button>
</body>
</html>
Lead_1 = [69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,69,72,72,72,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,72,72,72,72,73,73,73,73,73,73,73,73,73,72,72,72,72,72,72,72,71,71,71,70,69,69,68,67,67,67,67,68,68,69,69,70,71,72,72,73,73,73,73,73,73,73,73,73,72,72,73,73,73,73,73,72,72,73,76,79,81,80,75,67,55,44,36,34,38,46,57,67,74,77,77,76,74,73,72,73,73,73,73,73,73,73,74,74,74,74,73,73,73,73,73,73,73,73,73,73,73,73,73,73,74,73,73,72,71,70,69,68,68,67,66,66,65,64,63,63,62,61,61,61,61,61,61,61,61,61,62,62,63,64,64,65,66,67,68,69,70,71,71,72,73,73,73,73,73,73,73,73,73,74,74,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,72,72,72,73,73,74,74,73,73,72,72,72,72,73,73,73,72,72,72,72,72,73,73,73,72,72,72,72,73,73,72,72,72,71,70,69,69,69,68,67,67,67,67,67,67,68,69,69,70,71,71,72,73,73,73,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,73,75,78,80,78,72,62,51,40,34,33,39,49,59,69,75,77,77,75,73,72,72,72,72,73,73,73,72,72,72,73,73,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,71,71,71,70,70,69,68,67,66,65,64,64,64,63,63,62,61,61,60,60,60,60,60,60,60,61,61,62,62,63,64,65,66,67,67,68,69,70,71,71,72,72,72,72,72,72,72,73,73,73,73,72,72,72,72,72,72,72,72,72,73,73,73,73,73,73,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,71,70,70,69,69,68,68,67,67,66,66,66,67,67,68,69,70,71,71,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,74,76,79,80,77,70,60,49,39,33,33,40,50,61,70,75,77,76,75,73,72,72,72,73,73,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,73,72,72,71,70,69,69,68,67,66,65,64,64,63,62,62,61,60,60,60,60,61,61,61,61,61,61,62,62,63,64,65,66,67,68,69,69,70,71,72,73,73,73,73,73,73,73,73,73,73,73,72,73,73,73,73,73,73,72,72,72,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,72,72,72,72,72,73,73,73,73,72,72,72,72,73,73,73,72,72,71,70,70,69,68,68,67,67,67,67,67,67,68,68,69,69,70,70,71,72,72,72,72,72,72,72,73,73,73,73,72,72,72,72,72,72,72,73,74,77,79,79,76,68,57,45,36,33,36,44,54,64,72,76,77,76,75,73,72,72,72,73,73,73,73,73,72,72,72,72,72,72,72,72,73,73,73,73,73,73,73,73,72,73,73,73,72,72,71,70,69,68,68,67,66,65,64,63,62,62,62,61,61,61,60,60,61,61,61,61,62,62,63,63,64,64,65,66,67,68,69,69,70,71,72,72,72,73,73,73,73,73,73,73,72,72,72,72,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,73,72,72,73,73,73,73,73,73,72,72,72,72,73,73,72,72,72,72,72,73,73,73,72,72,72,72,72,72,72,72,72,71,70,69,68,68,67,67,67,66,66,67,67,68,69,70,70,71,71,72,72,72,72,72,72,72,72,73,72,72,72,72,72,72,72,72,71,72,74,77,79,78,74,66,55,44,36,33,36,44,55,65,72,76,77,76,74,73,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,71,71,71,70,70,69,68,67,66,65,64,64,63,63,62,61,61,60,60,60,60,60,60,60,61,61,62,62,63,63,64,65,66,67,67,68,69,70,71,72,73,73,72,72,72,72,72,72,73,73,73,73,72,72,72,73,73,72,72,72,72,72,72,72,73,73,72,72,72,72,72,73,73,73,73,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,71,70,70,69,68,68,67,67,67,67,67,67,68,68,69,70,70,71,72,72,72,72,72,72,72,72,72,72,72,72,72,72,73,72,72,72,72,73,76,79,80,79,73,64,52,41,34,34,39,49,59,69,75,77,77,76,74,73,73,73,73,73,73,73,73,73,73,73,73,73,74,74,73,73,73,73,73,73,74,74,74,74,74,74,74,74,73,72,71,70,69,68,68,67,67,66,65,64,64,64,63,63,63,62,62,62,62,63,63,63,63,64,64,65,66,66,67,68,69,71,72,72,73,74,75,75,75,76,76,76,74,72,70,70,69,69];
Итак, какое редактирование я должен сделать? Извините, я новичок в Javascript. Я получил помощь от других, чтобы получить этот код. :) Не могли бы вы рассказать? –
Im неспособный понять, чего вы пытаетесь достичь в этом. Можете ли вы сообщить мне, где и когда ваш код завершит выполнение? –
Привет, код завершает выполнение, как только график заканчивает печать, беря 1250 значений из массива. Поэтому ввод значений в журнал также должен завершиться. Но запись в журнале продолжается бесконечно. :( –