集成 prettier 插件, 新增 npm run lint:prettier 命令

src/tools/domUtil.js

@@ -4,16 +4,20 @@
  * @param elem dom
  * */
 export function getTop(elem) {
-    return elem.offsetTop + (elem.offsetParent && getTop(elem.offsetParent) || 0);
+  return (
+    elem.offsetTop + ((elem.offsetParent && getTop(elem.offsetParent)) || 0)
+  );
 }
 
 /**
  * 获取 left 属性值
  * <p>
  * @param elem dom
- * */ 
+ * */
 export function getLeft(elem) {
-    return elem.offsetLeft + (elem.offsetParent && getLeft(elem.offsetParent) || 0);
+  return (
+    elem.offsetLeft + ((elem.offsetParent && getLeft(elem.offsetParent)) || 0)
+  );
 }
 
 /**
@@ -22,9 +26,11 @@ export function getLeft(elem) {
  * @param elem dom
  * @param events 事件
  * @param handler 事件回调
- * */ 
+ * */
 export function on(elem, events, handler) {
-    [].concat(events).forEach(event => elem.addEventListener(event, handler, false));
+  []
+    .concat(events)
+    .forEach((event) => elem.addEventListener(event, handler, false));
 }
 
 /**
@@ -33,13 +39,13 @@ export function on(elem, events, handler) {
  * @param elem dom
  * @param events 事件
  * @param handler 事件回调
- * */ 
-export function once (elem, events, handler) {
-    const listener = function (_this, args) {
-        handler.apply(_this, args)
-        off(elem, events, listener);
-    }
-    on(elem, events, listener)
+ * */
+export function once(elem, events, handler) {
+  const listener = function (_this, args) {
+    handler.apply(_this, args);
+    off(elem, events, listener);
+  };
+  on(elem, events, listener);
 }
 
 /**
@@ -48,7 +54,9 @@ export function once (elem, events, handler) {
  * @param elem dom
  * @param events 事件
  * @param handler 事件回调
- * */ 
+ * */
 export function off(elem, events, handler) {
-    [].concat(events).forEach(event => elem.removeEventListener(event, handler, false));
-}
+  []
+    .concat(events)
+    .forEach((event) => elem.removeEventListener(event, handler, false));
+}