如何使用HTML5和canvas或SVG繪製網格？

在下面給出的範例中，我們首先定義了網格的寬度和高度。然後我們定義了畫布的大小，並將網格繪製到畫布上。

//we are setting the grid width and height
var grid_w = 200;
var grid_h = 200;

//we are setting padding around grid
var gridp = 15;

//we are defining size of canvas by defining its width and height
var canvas_w = grid_w + (gridp*2) + 1;
var canvas_h = grid_h + (gridp*2) + 1;
var canvas = $(&#39;<canvas/>&#39;).attr({width: canvas_w, height: canvas_h}).appendTo(&#39;body&#39;);
var ctx = canvas.get(0).getContext("2d");

這是我們的方法 −

function drawBoard(){
   for (var a = 0; a <= grid_w; a += 50) {
      ctx.moveTo(0.5 + a + gridp, gridp);
      ctx.lineTo(0.5 + a+ gridp, grid_h + gridp);
   }

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