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This article is about how to draw multiple straight lines with canvas tags in Html5. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

The following example is to draw multiple lines with canvas tags

The code is as follows:

Index_three

Your browser does not support canvas tags.

/ / get Canvas object (canvas)

Var canvas = document.getElementById ("myCanvas")

/ / simply detect whether the current browser supports Canvas objects to avoid prompting syntax errors in some browsers that do not support html5

If (canvas.getContext) {

/ / get the corresponding CanvasRenderingContext2D object (brush)

Var ctx = canvas.getContext ("2d")

/ / Color of the line

Ctx.strokeStyle= "# FF9933"

/ / width pixels of the line

Ctx.lineWidth=10

/ / the two-level shape of the line

Ctx.lineCap= "round"

/ / notice that the coordinate system of the Canvas is: the upper left corner of the Canvas canvas is the origin (0P0), right Abscissa, downward ordinate, in pixels (px).

/ / start a new drawing path

Ctx.beginPath ()

/ / defines the starting point coordinate of the line as (10 ~ (10))

Ctx.moveTo (50,50)

/ / define the end coordinates of the line as (50 ~ 10)

Ctx.lineTo (350250)

Ctx.moveTo (50,240)

Ctx.lineTo (360,60)

Ctx.moveTo (50,200)

Ctx.lineTo (300,40)

/ / draw a straight line along the path of the order of coordinate points

Ctx.stroke ()

/ / close the current drawing path

Ctx.closePath ()

}

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