回答編集履歴
2
ちょうせい
answer
CHANGED
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@@ -10,10 +10,12 @@
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10
10
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if(file !==undefined){
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11
11
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var fr = new FileReader();
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12
12
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fr.addEventListener('load',e=>{
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13
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-
var
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13
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+
var blob=new Blob([e.target.result],{"type":file.type});
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14
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-
var
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14
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+
var binary=String.fromCharCode.apply("",new Uint8Array(e.target.result));
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15
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-
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15
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+
var base64="data:"+file.type+";base64,"+btoa(binary);
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16
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-
console.log(
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16
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+
console.log(blob);
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17
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+
console.log(binary);
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18
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+
console.log(base64);
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17
19
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});
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18
20
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fr.readAsArrayBuffer(file);
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19
21
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}
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@@ -22,4 +24,6 @@
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22
24
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</script>
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23
25
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<input type="file" id="temp" value="">
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24
26
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<input type="button" id="btn" value="input">
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25
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-
````
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27
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+
````
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28
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+
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29
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+
※一部調整
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1
調整
answer
CHANGED
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@@ -1,1 +1,25 @@
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1
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-
id=tempのHTML要素が2つあるので無理です
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1
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+
id=tempのHTML要素が2つあるので無理です
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2
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+
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3
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+
# sample
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4
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+
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5
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+
```javascript
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6
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<script>
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7
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window.addEventListener('DOMContentLoaded', ()=>{
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8
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document.querySelector('#btn').addEventListener('click',()=>{
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9
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var file=document.querySelector('#temp').files[0];
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10
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+
if(file !==undefined){
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11
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var fr = new FileReader();
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12
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fr.addEventListener('load',e=>{
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13
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var content=new Blob([e.target.result],{"type":file.type});
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14
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var src=String.fromCharCode.apply("",new Uint8Array(e.target.result));
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15
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console.log(content);
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16
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console.log(src);
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17
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+
});
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18
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+
fr.readAsArrayBuffer(file);
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19
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+
}
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20
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});
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21
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});
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22
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</script>
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23
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+
<input type="file" id="temp" value="">
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24
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+
<input type="button" id="btn" value="input">
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25
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+
````
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