解决maptalks渲染地图在safri下持续拖动缩放导致程序报错直接崩溃的问题

zhangpeichuan001 · fuzhenn · commit 271a54db144c · 2018-06-11T17:19:27.000+08:00
diff --git a/src/renderer/layer/tilelayer/TileLayerCanvasRenderer.js b/src/renderer/layer/tilelayer/TileLayerCanvasRenderer.js
@@ -640,8 +640,8 @@ class TileLayerCanvasRenderer extends CanvasRenderer {
         if (!tile || !tile.image) {
             return;
         }
-        delete tile.image.onload;
-        delete tile.image.onerror;
+        tile.image.onload = null;
+        tile.image.onerror = null;
     }
 
     _generatePlaceHolder(z) {

Original file line number	Diff line number	Diff line change
`@@ -640,8 +640,8 @@ class TileLayerCanvasRenderer extends CanvasRenderer {`
`640`	`640`	`if (!tile \|\| !tile.image) {`
`641`	`641`	`return;`
`642`	`642`	`}`
`643`		`- delete tile.image.onload;`
`644`		`- delete tile.image.onerror;`
	`643`	`+ tile.image.onload = null;`
	`644`	`+ tile.image.onerror = null;`
`645`	`645`	`}`
`646`	`646`
`647`	`647`	`_generatePlaceHolder(z) {`