if (allMarker[i].id == this.markerId) { const markerBig = allMarker[i] const iconSize = markerBig.getIcon() console.log(iconSize, 'iconSize') iconSize.setImageSize({ width: 48, height: 48 }) iconSize.setSize({ width: 48, height: 48 }) iconSize.setAnchor({ width: 20, height: 45 }) markerBig.setIcon(iconSize) // const point = new BMapGL.Point(markerBig.latLng.lng, markerBig.latLng.lat) // this.map.centerAndZoom(point, 17) }优化一下
时间: 2024-02-17 12:00:49 浏览: 22
可能的代码优化包括:
1. 使用 const 或 let 替代 var 定义变量;
2. 将 allMarker[i] 中的重复调用提取到一个变量中,避免重复计算;
3. 将多次调用的函数尽可能提取出来,避免重复调用;
4. 使用对象的解构赋值简化代码;
5. 如果使用了 ES6 或更新版本的 JavaScript,可以使用箭头函数简化代码。
优化后的代码可能如下所示:
```
const marker = allMarker.find(m => m.id === this.markerId);
if (marker) {
const { icon } = marker.getIcon();
const newIcon = {
...icon,
imageSize: new BMapGL.Size(48, 48),
size: new BMapGL.Size(48, 48),
anchor: new BMapGL.Size(20, 45),
};
marker.setIcon(new BMapGL.Icon(newIcon));
}
```
注意,这只是一种可能的优化方式,具体优化方式可能因代码场景而异。
相关问题
this.$nextTick(() => { for (var i = 0; i < allMarker.length; i++) { if (allMarker[i].id == this.markerId) { const markerBig = allMarker[i] const iconSize = markerBig.getIcon() console.log(iconSize, 'iconSize') iconSize.setImageSize({ width: 48, height: 48 }) iconSize.setSize({ width: 48, height: 48 }) iconSize.setAnchor({ width: 20, height: 45 }) markerBig.setIcon(iconSize) // const point = new BMapGL.Point(markerBig.latLng.lng, markerBig.latLng.lat) // this.map.centerAndZoom(point, 17) } } })优化一下
可以考虑将循环部分的代码提取出来,单独作为一个函数,然后在$nextTick回调函数中调用该函数。这样可以提高代码的可读性和可维护性,同时也避免了在循环中频繁调用DOM操作影响性能的问题。具体实现可以参考下面的代码:
```
function updateMarkerIcon(allMarker, markerId) {
for (var i = 0; i < allMarker.length; i++) {
if (allMarker[i].id == markerId) {
const markerBig = allMarker[i];
const iconSize = markerBig.getIcon();
console.log(iconSize, 'iconSize');
iconSize.setImageSize({
width: 48,
height: 48
});
iconSize.setSize({
width: 48,
height: 48
});
iconSize.setAnchor({
width: 20,
height: 45
});
markerBig.setIcon(iconSize);
// const point = new BMapGL.Point(markerBig.latLng.lng, markerBig.latLng.lat);
// this.map.centerAndZoom(point, 17);
}
}
}
this.$nextTick(() => {
updateMarkerIcon(allMarker, this.markerId);
});
```
delOrPromptbox = x => { if (x.length == 0) { this.promptBox('warn', '请选择要删除的数据!'); } else { this.del(x); } }; async delete(row) { if (row.id == 'itemSubmit' && row.label == '批量删除') { const uriIdList = this.tableObjSubmit.checkedList.map(x => x['uriId']); this.delOrPromptbox(uriIdList); } else if (row.id == 'itemCom' && row.label == '批量删除') { const uriIdList = this.tableCom.checkedList.map(x => x['uriId']); this.delOrPromptbox(uriIdList); } else if (row.id == 'itemHistory' && row.label == '批量删除') { const uriIdList = this.tableHistory.checkedList.map(x => x['uriId']); this.delOrPromptbox(uriIdList); } else { this.del([row.uriId]); } }优化这段代码
你可以对这段代码进行优化,将重复的部分提取出来,减少代码重复。可以按照以下方式进行优化:
```javascript
delOrPromptbox = x => {
if (x.length == 0) {
this.promptBox('warn', '请选择要删除的数据!');
} else {
this.del(x);
}
};
async delete(row) {
let uriIdList;
if (row.label == '批量删除') {
if (row.id == 'itemSubmit') {
uriIdList = this.tableObjSubmit.checkedList.map(x => x['uriId']);
} else if (row.id == 'itemCom') {
uriIdList = this.tableCom.checkedList.map(x => x['uriId']);
} else if (row.id == 'itemHistory') {
uriIdList = this.tableHistory.checkedList.map(x => x['uriId']);
}
this.delOrPromptbox(uriIdList);
} else {
this.del([row.uriId]);
}
}
```
在优化后的代码中,通过提取重复的部分代码,使得逻辑更加清晰和简洁。