回答編集履歴
2
ちょうせい
answer
CHANGED
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@@ -26,6 +26,7 @@
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26
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window.addEventListener('DOMContentLoaded', ()=>{
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27
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const list=[];
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28
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document.querySelector('.droparea').addEventListener('change',e=>{
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29
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list.length=0;
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var target=e.target;
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document.querySelector('#preview').textContent="";
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[...target.files].forEach((file,idx)=>{
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1
chousei
answer
CHANGED
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@@ -1,3 +1,75 @@
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1
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+
こんな感じで
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2
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```javascript
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3
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<?PHP
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4
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print_r($_FILES);//自分自身に送ってファイルを確認する
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5
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?>
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6
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<style>
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7
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.droppable{
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8
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border:1px solid;
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9
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position:relative;
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10
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height:300px;
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11
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}
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.droparea{
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position:absolute;
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top:0;
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15
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width:100%;
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height:100%;;
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opacity:0;
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background-Color:lime;
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}
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#preview img{
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max-width:100px;
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max-height:100px;
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}
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</style>
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<script>
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window.addEventListener('DOMContentLoaded', ()=>{
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const list=[];
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document.querySelector('.droparea').addEventListener('change',e=>{
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var target=e.target;
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document.querySelector('#preview').textContent="";
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31
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[...target.files].forEach((file,idx)=>{
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if(file !==undefined){
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var fr = new FileReader();
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34
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fr.addEventListener('load',e=>{
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35
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var type=file.type;
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var name=file.name;
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if(["image/jpeg","image/gif","image/png"].includes(type)){
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var blob=new Blob([e.target.result],{type});
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39
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var binary=String.fromCharCode.apply("",new Uint8Array(e.target.result));
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40
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var base64="data:"+file.type+";base64,"+btoa(binary);
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var img=Object.assign(document.createElement('img'),{src:base64});
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list.push({blob,name});
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img.addEventListener('click',()=>{
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list[idx]=false;
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console.log(list);
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img.remove();
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});
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document.querySelector('#preview').appendChild(img);
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49
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}else{
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target.value="";
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}
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});
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fr.readAsArrayBuffer(file);
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}
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});
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});
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document.addEventListener('submit',(e)=>{
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document.querySelector('[type=file]').disabled=true;
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});
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document.addEventListener('formdata',(e)=>{
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list.forEach(x=>{
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if(x) e.formData.append(document.querySelector('[type=file]').name,x.blob,x.name);
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});
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64
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});
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});
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66
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</script>
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67
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<form method="post" enctype="multipart/form-data">
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68
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<div class="droppable">
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69
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<div>ドロップして</div>
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70
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<input type="file" class="droparea" name="myfile[]" multiple>
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71
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</div>
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72
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<input type="submit">
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1
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-
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73
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<div id="preview"></div>
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2
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-
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74
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</form>
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3
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-
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75
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```
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