Difference between revisions of "World Factbook"

From ProgZoo
Jump to navigation Jump to search
Line 21: Line 21:
   .then((r)=>{
   .then((r)=>{
     let letters = new Set(r.map(c=>c.name[0]));
     let letters = new Set(r.map(c=>c.name[0]));
    for(let a of letters){
      let b = document.createElement('button');
      b.innerText = a;
      document.body.append(b);
    }
  });
</pre>
</div>
==Get a button for each continent==
* Show a button for each continent
<div class=qu>
<pre class=usr>
</pre>
<pre class=ans>
fetch('/worldl.json')
  .then((r)=>r.json())
  .then((r)=>{
    let letters = new Set(r.map(c=>c.continent));
     for(let a of letters){
     for(let a of letters){
       let b = document.createElement('button');
       let b = document.createElement('button');

Revision as of 09:33, 22 January 2022


Get a button for each letter

  • Show a button for each letter that a country can begin with
  • You can use a Set to remove duplicates from a list.
fetch('/worldl.json')
  .then((r)=>r.json())
  .then((r)=>{
     let letters = r.map(c=>c.name[0]);
     for(let a of letters){
       let b = document.createElement('button');
       b.innerText = a;
       document.body.append(b);
     }
  });
fetch('/worldl.json')
  .then((r)=>r.json())
  .then((r)=>{
     let letters = new Set(r.map(c=>c.name[0]));
     for(let a of letters){
       let b = document.createElement('button');
       b.innerText = a;
       document.body.append(b);
     }
  });


Get a button for each continent

  • Show a button for each continent

fetch('/worldl.json')
  .then((r)=>r.json())
  .then((r)=>{
     let letters = new Set(r.map(c=>c.continent));
     for(let a of letters){
       let b = document.createElement('button');
       b.innerText = a;
       document.body.append(b);
     }
  });