回答編集履歴
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answer
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roadbike.jsを2回呼んでるからじゃないですか？
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roadbike.jsを2回呼んでるからじゃないですか？
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# リファクタリング
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ついでなので整理しておきます
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- html
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```html
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<script>
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9
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window.addEventListener('DOMContentLoaded', function(e){
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10
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document.querySelector('#btn2').disabled=true;
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11
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document.querySelector('form input[name=all]').addEventListener('change',function(e){
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var t=e.target;
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e.target.checked=true;
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[].forEach.call(document.querySelectorAll('form input[name=maker]:checked'),function(x){
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x.checked=false;
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});
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view();
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});
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[].forEach.call(document.querySelectorAll('form input[name=maker]'),function(x){
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x.addEventListener('change',function(e){
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var flg=false;
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const l1=document.querySelectorAll('form input[name=maker]').length;
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const l2=document.querySelectorAll('form input[name=maker]:checked').length;
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if(l1==l2){
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flg=true;
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[].forEach.call(document.querySelectorAll('form input[name=maker]:checked'),function(x){
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x.checked=false;
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});
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}
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document.querySelector('form input[name=all]').checked=flg;
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view();
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});
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});
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document.querySelector('#btn1').addEventListener('click',function(e){
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e.target.disabled=true;
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document.querySelector('#btn2').disabled=false;
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const url="data.json";
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const xhr=new XMLHttpRequest();
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xhr.open( "GET", url);
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xhr.onreadystatechange=function(){
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if(( xhr.readyState == 4 ) && ( xhr.status == 200 )){
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JSON.parse(xhr.response).forEach(function(data){
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const tr=document.createElement('tr');
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Object.values(data).forEach(function(x){
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const td=document.createElement('td');
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td.appendChild(document.createTextNode(x));
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tr.appendChild(td);
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});
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document.querySelector('tbody').appendChild(tr);
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});
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view();
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}
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}
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xhr.send('');
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});
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document.querySelector('#btn2').addEventListener('click',function(e){
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e.target.disabled=true;
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document.querySelector('#btn1').disabled=false;
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[].map.call(document.querySelectorAll('tbody tr'),function(x){
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return x;
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}).forEach(function(x){
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x.parentNode.removeChild(x);
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});
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});
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});
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function view(){
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const vals=[].map.call(document.querySelectorAll('form [name=maker]:checked'),function(x){
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return x.value;
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});
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[].forEach.call(document.querySelectorAll('tbody tr'),function(x){
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var flg=vals.indexOf(x.querySelector('td:nth-child(2)').textContent)==-1;
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if(document.querySelector('form input[name=all]').checked) flg=false;
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x.style.display=flg?"none":"";
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});
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}
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</script>
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<div id="container">
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<header>
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</header>
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<main>
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<form>
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<input type="button" id = "btn1" class="btn" value="挿入"></input>
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<input type="button" id = "btn2" class="btn" value="削除" disabled="true"></input>
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<input type="checkbox" value="all" name="all" checked>ALL</input><br>
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<input type="checkbox" value="scott" name="maker">SCOTT</input><br>
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<input type="checkbox" value="anchor" name="maker">ANCHOR</input><br>
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<input type="checkbox" value="kouta" name="maker">KOUTA</input><br>
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<input type="checkbox" value="pinarello" name="maker">PINARELLO</input><br>
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<input type="checkbox" value="bianchi" name="maker">BIANCHI</input><br>
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<input type="checkbox" value="trek" name="maker">TREK</input><br>
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<input type="checkbox" value="look" name="maker">LOOK</input><br>
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<input type="checkbox" value="ridley" name="maker">RIDLEY</input>
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</form>
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<table>
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<thead>
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<th>バイク名</th>
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<th>メーカー</th>
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<th>フレーム</th>
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<th>コンポ</th>
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<th>価格</th>
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</thead>
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<tbody>
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</tbody>
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</table>
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</main>
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<footer>©タコナキンジ</footer>
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</div>
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```
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- data.json
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```json
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[
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{
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"name" : "foil30.1" ,
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"maker" : "scott" ,
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"frame" : "carbon" ,
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"component" : "105" ,
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"price" : "\360,000"
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},
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{
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"name" : "addict rc10" ,
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"maker" : "scott" ,
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"frame" : "carbon" ,
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"component" : "dura-ace" ,
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"price" : "\569,000"
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},
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{
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"name" : "speedstar 10" ,
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"maker" : "scott" ,
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"frame" : "aluminium" ,
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"component" : "105" ,
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"price" : "\149,000"
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},
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{
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"name" : "rs8 elite" ,
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"maker" : "anchor" ,
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"frame" : "carbon" ,
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"component" : "ultegra" ,
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"price" : "\525,000"
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},
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{
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"name" : "rnc3 equipe" ,
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"maker" : "anchor" ,
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"frame" : "Cr&Mo" ,
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"component" : "105" ,
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"price" : "\195,000"
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},
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{
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"name" : "kouger" ,
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"maker" : "kouta" ,
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"frame" : "carbon" ,
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"component" : "ultegra" ,
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"price" : "\517,000"
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},
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{
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"name" : "prince" ,
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"maker" : "pinarello" ,
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"frame" : "carbon" ,
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"component" : "ultegra" ,
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"price" : "\465,000"
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},
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{
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"name" : "angliru" ,
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"maker" : "pinarello" ,
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"frame" : "carbon" ,
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"component" : "105" ,
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"price" : "\243,000"
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},
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{
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"name" : "prima" ,
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"maker" : "pinarello" ,
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"frame" : "aluminium" ,
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"component" : "sora" ,
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"price" : "\149,000"
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},
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{
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"name" : "aria" ,
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"maker" : "bianchi" ,
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"frame" : "carbon" ,
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"component" : "105" ,
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"price" : "\278,000"
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},
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{
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"name" : "impulso" ,
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"maker" : "bianchi" ,
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"frame" : "aluminium" ,
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"component" : "tiagra" ,
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"price" : "\147,000"
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},
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{
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"name" : "madone 9.0" ,
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"maker" : "trek" ,
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"frame" : "carbon" ,
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"component" : "altegra" ,
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"price" : "\510,000"
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},
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{
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"name" : "emonda sl7" ,
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"maker" : "trek" ,
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"frame" : "carbon" ,
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"component" : "ultegra" ,
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"price" : "\482,000"
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},
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{
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"name" : "765 optimum" ,
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"maker" : "look" ,
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"frame" : "carbon" ,
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"component" : "ultegra" ,
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"price" : "\349,800"
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},
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{
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"name" : "fenix c" ,
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"maker" : "ridley" ,
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"frame" : "carbon" ,
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"component" : "105" ,
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"price" : "\260,000"
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}
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]
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```
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