Created
February 2, 2021 20:16
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文字列をファイルとしてダウンロードするJavaScript
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Download Test</title> | |
| </head> | |
| <div> | |
| <textarea id="input-text" rows="10" cols="60">Download Test</textarea> | |
| <button id="btn">download</button> | |
| </div> | |
| <script> | |
| let inputText = document.getElementById("input-text") | |
| let btn = document.getElementById("btn") | |
| downloadText = (text, filename) => { | |
| let blob = new Blob([text], {type: 'text/plain'}); | |
| let url = URL.createObjectURL(blob); | |
| let a = document.createElement("a"); | |
| document.body.appendChild(a); | |
| a.download = filename; | |
| a.href = url; | |
| a.click(); | |
| a.remove(); | |
| URL.revokeObjectURL(url); | |
| } | |
| btnClicked = (ev) => { | |
| console.log("btn clicked") | |
| downloadText(inputText.value, "example.txt") | |
| } | |
| btn.addEventListener('click', btnClicked) | |
| </script> | |
| </body> | |
| </html> |
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