just came into contact with the front end of the React code, it is really a big head.
go straight to the code. Isn"t the value attribute in e.target.value a built-in property? The console error is not defined.
textChange = (e)=>{
let value = e.target.value;
this.setState({
textValue:value,
})
} the case where e is printed out is the value of key here
target is undefined, please print out e-check
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