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HTML canvas textBaseline Property

HTML canvas Reference HTML Canvas Reference

Example

Draw a red line at y=100, then place each word at y=100 with different textBaseline values:

YourbrowserdoesnotsupporttheHTML5canvastag.

JavaScript:

var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");

//Draw a red line at y=100
ctx.strokeStyle="red";
ctx.moveTo(5,100);
ctx.lineTo(395,100);
ctx.stroke();

ctx.font="20px Arial"

//Place each word at y=100 with different textBaseline values
ctx.textBaseline="top";
ctx.fillText("Top",5,100);
ctx.textBaseline="bottom";
ctx.fillText("Bottom",50,100);
ctx.textBaseline="middle";
ctx.fillText("Middle",120,100);
ctx.textBaseline="alphabetic";
ctx.fillText("Alphabetic",190,100);
ctx.textBaseline="hanging";
ctx.fillText("Hanging",290,100);

Try it yourself »

Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

Internet Explorer 9, Firefox, Opera, Chrome, and Safari support the textBaseline property.

Note: The textBaseline property works differently in different browsers, especially when using "hanging" or "ideographic".

Note: Internet Explorer 8 and earlier versions, do not support the <canvas> element.

Definition and Usage

The textBaseline property sets or returns the current text baseline used when drawing text.

The illustration below demonstrates the various baselines supported by the textBaseline attribute:

textBaseline illustration

Note: The fillText() and strokeText() methods will use the specified textBaseline value when positioning the text on the canvas.

Default value: alphabetic
JavaScript syntax: context.textBaseline="alphabetic|top|hanging|middle|ideographic|bottom";

Property Values

Values Description Play it
alphabetic Default. The text baseline is the normal alphabetic baseline Play it »
top The text baseline is the top of the em square Play it »
hanging The text baseline is the hanging baseline Play it »
middle The text baseline is the middle of the em square Play it »
ideographic The text baseline is the ideographic baseline Play it »
bottom The text baseline is the bottom of the bounding box Play it »

HTML canvas Reference HTML Canvas Reference

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