REACT ERROR

Problem

I’m getting the below error in the functional component of the ReactJs application.

it’s giving this error

Expected an assignment or function Hotline and instead saw an expression no-unused-expressions

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I wanted to use curly braces I had lớn add thereturntừ khoá, like so:

If You’re using JSX inside a function with curly braces you need to lớn modify it to parenthesis.

Wrong Code:

return this.props.todos.map((todo) =>

tovày.author

; );Correct Code

//Change Curly Brace To Paranthesis change lớn => ()return this.props.todos.map((todo) => (

tovày.author

; ));Class Component ExampleHere is the class component example, deeply observe sầu the return statement of the class component


import React from 'react';class Counter extends React.Component state = count: 0, ; formatCount() const count = this.state; // use a return statement here, it is a importent, return count === 0 ? 'Zero' : count; render() return( this.formatCount() Increment ); export default Counter;

Xem thêm: Làm Chả Giò Để Tủ Lạnh Ngày Tết, Cách Bảo Quản Nem Trong Tủ Lạnh Ngày Tết

Instead of

return ( this.formatCount() Increment )Use Below Code

return( this.formatCount() Increment )Basically use brace“(“in the same line of return like“return(“. It will fix this issue

Summery

In the above article, we underst& that a very comtháng lambda syntax typo mistakes lead lớn a difficult error, without understanding the phản hồi javascript syntax may lead khổng lồ such types of issues. So, I hope you find them helpful.


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