Property:
measureText:
'Hello World'
'How are you?'
'It is a great day!'
Canvas:
your browser does not support the canvas tag
Code:
var c=document.getElementById('myCanvas');
var ctx=c.getContext('2d');
ctx.font='30px Arial';
var m=ctx.measureText(
'Hello World')
;
ctx.fillText(m.width,10,30);
单击上面的属性值可查看结果
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