Difference between revisions of "DOM working with data"

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== Get the details from the number ==
== Get the details from the number ==
Each country has a bunch of data associated:
area: 330803
capital: "Kuala Lumpur"
continent: "Asia"
flag: "//upload.wikimedia.org/wikipedia/commons/6/66/Flag_of_Malaysia.svg"
gdp: 304726000000
id: 102
name: "Malaysia"
population: 30177000
tld: ".my"
<div class=qu>
<div class=qu>
<pre class=usr>
<pre class=usr>

Revision as of 19:35, 21 August 2021


Get the name from the number

  • You can obtain data from the server using a fetch call.
  • In these examples you will be getting data from /worldl.json this is a list of 195 countries in json format
  • The program snippet shows the name of country 42.
  • Change it so it shows the name of country 50.
  • See if you can find your country.
fetch('/worldl.json')
  .then((r)=>r.json())
  .then((r)=>{
     let tgt = r[42];
     document.body.innerHTML = tgt.name;
  });
fetch('/worldl.json')
  .then((r)=>r.json())
  .then((r)=>{
     let tgt = r[50];
     document.body.innerHTML = tgt.name;
  });

Get the details from the number

Each country has a bunch of data associated:

area: 330803
capital: "Kuala Lumpur"
continent: "Asia"
flag: "//upload.wikimedia.org/wikipedia/commons/6/66/Flag_of_Malaysia.svg"
gdp: 304726000000
id: 102
name: "Malaysia"
population: 30177000
tld: ".my"
fetch('/worldl.json')
  .then((r)=>r.json())
  .then((r)=>{
     let tgt = r[102];
     document.body.innerHTML = `
  <div>${tgt.name}</div>
  <div>${tgt.continent}</div>
  <div>${tgt.capital}</div>
  <div>population: ${tgt.population}</div>
`;
  });
fetch('/worldl.json')
  .then((r)=>r.json())
  .then((r)=>{
     let tgt = r[102];
     document.body.innerHTML = `
  <div>${tgt.name} (${tgt.continent})</div>
  <div>${tgt.capital}</div>
  <div>population: ${tgt.population}</div>
  <img src='${tgt.flag}' style='width:100px'/>
`;
  });