From f7bbd1e93991d8522d80324a25348fe9c20df41b Mon Sep 17 00:00:00 2001
From: qiang <guoshengqiang@live.com>
Date: Thu, 3 Sep 2020 18:36:04 +0800
Subject: [PATCH] =?UTF-8?q?docs:=20CanvasContext.measureText=20=E5=A2=9E?=
 =?UTF-8?q?=E5=8A=A0=20callback=20=E5=8F=82=E6=95=B0=E8=AF=B4=E6=98=8E?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 docs/api/canvas/CanvasContext.md | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/docs/api/canvas/CanvasContext.md b/docs/api/canvas/CanvasContext.md
index 366dea94c..51b782d2a 100644
--- a/docs/api/canvas/CanvasContext.md
+++ b/docs/api/canvas/CanvasContext.md
@@ -658,13 +658,14 @@ ctx.draw()
 ![uniapp](//img-cdn-qiniu.dcloud.net.cn/uniapp/images/line-to.png?t=201859)
 
 ### CanvasContext.measureText
-测量文本尺寸信息，目前仅返回文本宽度。同步接口。(App端自定义组件编译模式暂时不可用)
+测量文本尺寸信息，目前仅返回文本宽度。同步接口。
 
 **参数**
 
 |参数	|类型	|说明			|
 |---	|---	|---			|
 |text	|String	|要测量的文本	|
+|callback	|Function	|测量完成回调（2.8.10+ 支持）	|
 
 **返回**
 
@@ -679,8 +680,9 @@ ctx.draw()
 ```javascript
 const ctx = uni.createCanvasContext('myCanvas')
 ctx.font = 'italic bold 20px cursive'
-const metrics = ctx.measureText('Hello World')
-console.log(metrics.width)
+ctx.measureText('Hello World', function(metrics){
+	console.log(metrics.width)
+})
 ```
 
 ### CanvasContext.moveTo
-- 
GitLab