如何使用JavaScript創建簡單的條形圖

Question

用戶將輸入圖形的數據。 我已經用了一條拉繩，但無法正確找到位置。 到目前為止，這是我的代碼。 由於無法將Java環境嵌入網頁中，因此我無法使用條形圖庫。

// Ex5-1: Weather Data Graph
enter code herevar canvas;
canvas = openGraphics();
var sun;
var n;
var xposition;
xposition = 40;
sun = prompt("enter the sun");
sun = parseInt(sun, 10);
 ///xposition= xposition +10;
canvas.drawLine(40, 10, 40, 245);
canvas.drawLine(40, 245, 390, 245);
canvas.drawString("225 ", 10, 30);
canvas.drawString("180 ", 10, 70);
canvas.drawString("135 ", 10, 110);
canvas.drawString("90 ", 10, 150);
canvas.drawString("45 ", 10, 190);
canvas.drawString("0 ", 10, 230);
canvas.drawString("J ", 50, 250);
canvas.drawString("F ", 80, 250);
canvas.drawString("M ", 110, 250);
canvas.drawString("A ", 140, 250);
canvas.drawString("M ", 170, 250);
canvas.drawString("J ", 200, 250);
canvas.drawString("J ", 230, 250);
canvas.drawString("A ", 260, 250);
canvas.drawString("S ", 290, 250);
canvas.drawString("O ", 320, 250);
canvas.drawString("N ", 350, 250);
canvas.drawString("D ", 380, 250);
canvas.setStroke(30);
canvas.drawLine(xposition, 230, xposition, sun);
canvas.paint();

Answer 1

除非您將此javascript條形圖繪圖儀作為練習來編寫，否則我將使用jqplot 。