0.Public -> create Folder pdf -> Drop 2 files pdf
Plan:
When we want to read file 1 or file 2, we input 1st or 2nd file
-> then it will be the reference for onClick
and src link when we click on will also be another reference
1. App.jsx
import React, {useRef,useState} from 'react'
const Ex08 = () => {
const inputRef = useRef();
const pdfRef = useRef();
const switchFile = (num) =>{
console.log('pdf',pdfRef.current.src);
pdfRef.current.src = `./pdf/pdfFile${num}.pdf`
}
const changePdf = (src)=>{
console.log('inputRef',inputRef.current.value);
if(inputRef.current.value === '첫번째'){
switchFile(1)
}else if(inputRef.current.value === '두번째'){
switchFile(2)
}
};
return (
<div>
<input type="text" ref ={inputRef} />
<button onClick={changePdf} >pdf 변경</button>
<iframe
src = {switchFile}
width= "100%"
height="90%"
ref = {pdfRef}
>
</iframe>
</div>
)
}
export default App
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