这是indexloc提供的服务，不要输入任何密码
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chore: 使用fill替换for #102

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chore: 使用fill替换for #102

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3 changes: 1 addition & 2 deletions packages/runtime-core/src/renderer.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -269,9 +269,8 @@ export function createRenderer(options) {
let patched = 0;
// 初始化 从新的index映射为老的index
// 创建数组的时候给定数组的长度，这个是性能最快的写法
const newIndexToOldIndexMap = new Array(toBePatched);
// 初始化为 0 , 后面处理的时候 如果发现是 0 的话，那么就说明新值在老的里面不存在
for (let i = 0; i < toBePatched; i++) newIndexToOldIndexMap[i] = 0;
const newIndexToOldIndexMap = new Array(toBePatched).fill(0)

// 遍历老节点
// 1. 需要找出老节点有，而新节点没有的 -> 需要把这个节点删除掉
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