remove testPassive after testing, fix maptalks/issues#793

maptalks · Nov 21, 2024 · f514256 · f514256
1 parent ff2cd3c
commit f514256
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/src/core/Browser.ts b/src/core/Browser.ts
@@ -54,6 +54,9 @@ function getDevicePixelRatio() {
     return (window.devicePixelRatio || (window.screen.deviceXDPI / window.screen.logicalXDPI));
 }
 
+function isPassive() {
+}
+
 if (!IS_NODE) {
     const ua = navigator.userAgent.toLowerCase(),
         doc = document.documentElement || { style: {} },
@@ -119,13 +122,14 @@ if (!IS_NODE) {
     /* Add feature test for passive event listener support */
     let supportsPassive = false;
     try {
-        window.addEventListener('testPassive', () => {
-        }, {
+
+        window.addEventListener('testPassive', isPassive, {
             get passive() {
                 supportsPassive = true;
                 return true;
             }
         });
+        window.removeEventListener('testPassive', isPassive);
         /*eslint-disable no-empty */
     } catch (e) {
     }