在下面给出的示例中,我们首先定义了网格的宽度和高度。然后我们定义了画布的大小,并将网格绘制到画布上。
//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 = $('<canvas/>').attr({width: canvas_w, height: canvas_h}).appendTo('body'); var ctx = canvas.get(0).getContext("2d");
这是我们的方法 −
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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