Update expression.md

huanglii · huanglii · commit 8613af57e174 · 2025-03-22T20:23:51.000+08:00
diff --git a/docs/style-spec/expression.md b/docs/style-spec/expression.md
@@ -185,7 +185,7 @@ map.setFeatureState({ source: 'states', id: hoveredStateId }, { hover: false })
 
 ```js
 {
-  "filter": {
+  "filter": ["within", {
     "coordinates": [
       [
         [107, 30],
@@ -196,7 +196,7 @@ map.setFeatureState({ source: 'states', id: hoveredStateId }, { hover: false })
       ]
     ],
     "type": "Polygon"
-  }
+  }]
 }
 ```
 

Original file line number	Diff line number	Diff line change
`@@ -185,7 +185,7 @@ map.setFeatureState({ source: 'states', id: hoveredStateId }, { hover: false })`
`185`	`185`
`186`	`186`	```js
`187`	`187`	`{`
`188`		`- "filter": {`
	`188`	`+ "filter": ["within", {`
`189`	`189`	`"coordinates": [`
`190`	`190`	`[`
`191`	`191`	`[107, 30],`
`@@ -196,7 +196,7 @@ map.setFeatureState({ source: 'states', id: hoveredStateId }, { hover: false })`
`196`	`196`	`]`
`197`	`197`	`],`
`198`	`198`	`"type": "Polygon"`
`199`		`- }`
	`199`	`+ }]`
`200`	`200`	`}`
`201`	`201`	```
`202`	`202`