Sifa textBaseline

Sifa textBaseline inabainisha upanganishaji wima wa maandishi, yaliyochorwa kwa kutumia mtindo fillText au mtindo strokeText. Inakubali moja ya thamani zinazowezekana: top, hanging, middle, alphabetic (kwa default), ideographic, bottom (kwa ufahamu wa maadili tazama www.w3schools.com/tags/canvas_textbaseline.asp).

Syntax

javascriptmuktadha.textBaseline = thamani;

Mfano

Wacha tuweke upanganishaji wima wa maandishi kwenye mstari wa juu:

html<canvas id="canvas" width="200" height="200" style="background: #f4f4f4;"></canvas>

javascriptconst canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');

ctx.strokeStyle = 'nyekundu';
ctx.moveTo(0, 100);
ctx.lineTo(400, 100);
ctx.stroke();
ctx.font="14px Arial";
ctx.textBaseline = 'juu'; 
ctx.fillText('maandishi', 80, 100);

Результат:

Mfano

Sasa wacha tuweke upanganishaji wima wa maandishi kwenye mstari wa chini:

html<canvas id="canvas" width="200" height="200" style="background: #f4f4f4;"></canvas>

javascriptconst canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');

ctx.strokeStyle = 'nyekundu';
ctx.moveTo(0, 100);
ctx.lineTo(400, 100);
ctx.stroke();
ctx.font="14px Arial";
ctx.textBaseline="chini"; 
ctx.fillText('maandishi', 80, 100); 

Результат:

Angalia pia