- 1 antd中,input组件在触发onChange时,如果是中文输出模式,会频繁被触发,导致页面性能升高。尤其是在onChange时须要实时搜寻的状况。
- 2 在mac设施下,如果在onChange中应用value.replace(/\s/g,”/), 会呈现无奈输出中文的问题。优化之后,能够失常输出。
默认状况下的Input组件:
优化之后的ChineseInput
应用形式: 和原始Input组件应用形式一样,没用额定api
index.tsx
import React, { FC, useEffect, useRef, useState } from 'react';
import { Input, InputProps } from 'antd';
import styles from './index.module.less'
interface IProps extends InputProps {
[propName: string]: any;
value?: string;
}
const Index: FC<IProps> = (
{
value = '',
onChange,
onInput,
onCompositionStart,
onCompositionEnd,
...resetProps
}) => {
const chineseInputting = useRef(false); // 是否是中文(爽字节字符的输出)模式
const [val, setVal] = useState('')
useEffect(() => {
setVal(value)
}, [value])
// 优化搜寻
const change = (e: any) => {
onChange && onChange(e)
}
return (
<Input
className={styles.chineseInput}
{...resetProps}
value={val}
onChange={(e: any) => {
if (e.target.value === '') {
change(e)
}
setVal(e.target.value)
}}
onInput={(e: any) => {
onInput && onInput(e)
if (!chineseInputting.current) {
change(e)
}
}}
onCompositionStart={(e: any) => {
onCompositionStart && onCompositionStart(e)
chineseInputting.current = true;
}}
onCompositionEnd={(e: any) => {
onCompositionEnd && onCompositionEnd(e)
if (chineseInputting.current) {
change(e)
chineseInputting.current = false;
}
}}
/>
);
};
export default Index;
index.module.less
.chineseInput {
:global {
// 暗藏safari表单输出项右侧呈现的图标
input::-webkit-contacts-auto-fill-button {
visibility: hidden;
display: none !important;
pointer-events: none;
position: absolute;
right: 0;
}
}
}
应用形式:
<ChineseInput
autoClear={true}
value={value}
onChange={onChange}
{...}
/>
组件源码: github.com/jsoncode/empty-react-antd-ts/tree/main/src/components/ChineseInput
发表回复