fabe721991
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72 lines
4.7 KiB
JavaScript
72 lines
4.7 KiB
JavaScript
/* widget: interactieve getallenlijn */
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function mountNumberline(root, initState){
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const S=Object.assign({level:1,yearGroup:null,managedLearningLevel:false,min:0,max:20,step:1,value:0,target:10,score:0,streak:0,solved:false},initState||{});
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const rules=mathTaskRules(S.yearGroup,S.level);
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if(S.managedLearningLevel&&rules){S.min=rules.numberlineMin;S.max=rules.numberlineMax;S.step=rules.numberlineStep;S.value=S.min;S.target=S.min+S.step;}
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root.innerHTML=`
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<div class="nlw">
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<div class="nlw-settings">
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<label><span class="nlw-from-label"></span><input class="nlw-min" type="number" min="-1000000" max="999999"></label>
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<label><span class="nlw-to-label"></span><input class="nlw-max" type="number" min="-999999" max="1000000"></label>
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<label><span class="nlw-step-label"></span><select class="nlw-step"><option>1</option><option>2</option><option>5</option><option>10</option></select></label>
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<button class="tbtn ghost nlw-new" type="button"></button>
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</div>
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<div class="nlw-playtop"><div class="nlw-task"></div><output class="nlw-score"></output></div>
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<div class="nlw-scroll"><div class="nlw-line"></div></div>
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<div class="nlw-actions">
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<button class="tbtn ghost nlw-minus" type="button">−</button>
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<output class="nlw-value"></output>
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<button class="tbtn ghost nlw-plus" type="button">＋</button>
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<button class="tbtn nlw-check" type="button"></button>
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</div>
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<div class="nlw-feedback" aria-live="polite"></div>
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</div>`;
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const q=s=>root.querySelector(s), minEl=q('.nlw-min'), maxEl=q('.nlw-max'), stepEl=q('.nlw-step'),
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line=q('.nlw-line'), valueEl=q('.nlw-value'), task=q('.nlw-task'), feedback=q('.nlw-feedback'),score=q('.nlw-score');
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if(![...stepEl.options].some(o=>+o.value===S.step))stepEl.add(new Option(S.step,S.step));
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minEl.value=S.min; maxEl.value=S.max; stepEl.value=S.step;
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[minEl,maxEl,stepEl].forEach(el=>el.disabled=!!S.managedLearningLevel);
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function normalize(){
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let min=Math.max(-1000000,Math.min(999999,+minEl.value||0)); let max=Math.max(-999999,Math.min(1000000,+maxEl.value||20));
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if(max<=min) max=min+1; const step=+stepEl.value||1;
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if((max-min)/step>60) max=min+60*step;
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S.min=min; S.max=max; S.step=step;
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if(S.value<min||S.value>max||(S.value-min)%step!==0) S.value=min;
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if(S.target<min||S.target>max||(S.target-min)%step!==0) S.target=min;
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minEl.value=min; maxEl.value=max; render();
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}
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function render(){
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line.innerHTML="";
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for(let v=S.min;v<=S.max;v+=S.step){
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const b=document.createElement('button'); b.type='button'; b.className='nlw-tick'; b.dataset.v=v;
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const mark=document.createElement('i'), label=document.createElement('span'); label.textContent=v;
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b.append(mark,label); b.classList.toggle('selected',v===S.value);
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b.addEventListener('click',()=>{S.value=v;if(!S.solved)feedback.textContent="";render();}); line.appendChild(b);
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}
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valueEl.textContent=S.value; task.textContent=T('numberlineTask').replace('{number}',S.target);
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score.textContent=T('numberlineScore').replace('{score}',S.score).replace('{streak}',S.streak);
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}
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function newTarget(){
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const count=Math.floor((S.max-S.min)/S.step);let target=S.target;
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for(let tries=0;tries<8&&target===S.target;tries++)target=S.min+Math.floor(Math.random()*(count+1))*S.step;
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S.target=target;S.solved=false;
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feedback.textContent="";feedback.className='nlw-feedback';render();
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}
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[minEl,maxEl,stepEl].forEach(el=>el.addEventListener('change',normalize));
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q('.nlw-minus').addEventListener('click',()=>{S.value=Math.max(S.min,S.value-S.step);render();});
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q('.nlw-plus').addEventListener('click',()=>{S.value=Math.min(S.max,S.value+S.step);render();});
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q('.nlw-new').addEventListener('click',newTarget);
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q('.nlw-check').addEventListener('click',()=>{
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const ok=S.value===S.target; feedback.textContent=T(ok?'numberlineGood':'numberlineTry');
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feedback.className='nlw-feedback '+(ok?'ok':'bad');
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if(ok){if(!S.solved){S.score++;S.streak++;S.solved=true;}sndGood();confetti(root);}else{S.streak=0;S.solved=false;sndBad();}render();
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});
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function labels(){
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q('.nlw-from-label').textContent=T('numberlineFrom'); q('.nlw-to-label').textContent=T('numberlineTo');
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q('.nlw-step-label').textContent=T('numberlineStep'); q('.nlw-new').textContent=T('numberlineNew');
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q('.nlw-check').textContent=T('numberlineCheck'); render();
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}
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root.classList.toggle("managed-learning-level",!!S.managedLearningLevel);
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document.addEventListener('langchange',labels); labels(); normalize();
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return {getState:()=>({min:S.min,max:S.max,step:S.step,value:S.value,target:S.target,score:S.score,streak:S.streak,solved:S.solved})};
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}
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