7
vue typescript event 的数据类型怎么表示？
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function readFile(event): void {
const file = event.target.files[0];
console.log(file.name);
};
在 vscode 里 function readFile(event): void { 中的 event 总是有红色波浪线！ 想请教一下如何解决？
1 条回复 • 2021-12-24 19:16:47 +08:00
wunonglin 1 小时 7 分钟前
```js
function readFile(event: Event): void{
const input = event.target as HTMLInputElement
const file = input.files.item(0) || undefined
if (file){
巴拉巴拉
}
}
```
或者
```js
function readFile(event: Event): void{
const input = event.target as any
if (input instanceof HTMLInputElement){
const file = input.files.item(0) || undefined
if (file){
巴拉巴拉
}
}
}
```
大概是这样。手写的没用编辑器，有错请指正。。。
function readFile(event: Event): void{
const input = event.target as HTMLInputElement
const file = input.files.item(0) || undefined
if (file){
巴拉巴拉
}
}
```
或者
```js
function readFile(event: Event): void{
const input = event.target as any
if (input instanceof HTMLInputElement){
const file = input.files.item(0) || undefined
if (file){
巴拉巴拉
}
}
}
```
大概是这样。手写的没用编辑器，有错请指正。。。
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