HTML canvas textBaseline Property
Example
Draw a red line at y=100, then place each word at y=100 with different textBaseline values:
JavaScript:
const canvas = document.getElementById("myCanvas");
const ctx = canvas.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 »
Description
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:
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 » |
Browser Support
The <canvas> element is an HTML5 standard (2014).
textBaseLine is supported in all modern browsers:
| Chrome | Edge | Firefox | Safari | Opera | IE |
| Yes | Yes | Yes | Yes | Yes | 9-11 |
❮ Canvas API
