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Add array of objects as elements to existing table td

I have an existing table. I have the td cells displayed as blocks intentionally. :) My goal is to add labels inside each of the td's by creating spans with a specific class, then prepend them to the table cell. I'm using an array of objects with the label data, an 'icon' and a 'name'.

I'm having trouble applying the icons individually to the td's. They all get grouped together on each cell.

A few issues I'm trying to solve:

Add each object (one icon and one label) to each cell
When creating the elements, add an icon class to the icon span and an label class to the label span.
Apply them appropriately in the order shown in the object

I've tried a bunch of different things (see code comments) and lots of good posts here on SO but this function seems to get me the closest to my goal. Any help is very much appreciated.

let items = [{
    id: "🐌",
    name: "snail"
  },
  {
    id: "🐜",
    name: "ant"
  },
  {
    id: "🪲",
    name: "beetle"
  },
  {
    id: "🐝",
    name: "honeybee"
  },
  {
    id: "🕷",
    name: "spider"
  }
];

function createLabel(obj) {
  // let loc = document.getElementsByTagName("#profiles td");
  let loc = document.querySelectorAll("#profiles td");

  if (typeof obj !== "undefined" && obj !== null) {
    // loop through td's
    for (let i = 0; i < loc.length; i++) {
      // apply object data
      obj.forEach((item) => {
        Object.values(item).forEach((text) => {
          // loc.prepend(span);

          // I also tried my for loop here with similar weird results

          let span = document.createElement("span");
          let textNode = document.createTextNode(text);
          // 'id' should get .icon
          // 'name' should get .label
          span.className = 'icon';
          span.append(textNode);
          loc[i].prepend(span);
        });
      });
    }
  }
}
createLabel(items);

<table id="profiles">
  <tr>
    <td>Snail Stuff</td>
    <td>Ant Stuff</td>
    <td>Beetle Stuff</td>
    <td>Honeybee Stuff</td>
    <td>Spider Stuff</td>
  </tr>
</table>

about 4 years ago · Juan Pablo Isaza

2 answers

Answer question

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You were using document.querySelectorAll. You can simply use document.querySelector to get the table and run a for of loop to append the element to the table

let items = [
  { id: "🐌", name: "snail", text: "Snail Stuff" },
  { id: "🐜", name: "ant", text: "Ant Stuff" },
  { id: "🪲", name: "beetle", text: "Beetle Stuff" },
  { id: "🐝", name: "honeybee", text: "Honeybee Stuff" },
  { id: "🕷", name: "spider", text: "Spider Stuff" }
];

function createLabel(obj) {
  const loc = document.querySelector("#profileRow");
  const elements = [];

  for (const item of obj) {
    const el = document.createElement("td");
    el.innerHTML = `<span class='icon'>${item.id}</span> <span class='label'>${item.name}</span> ${item.text}`;
    elements.push(el);
  }

  loc.append(...elements);
}
createLabel(items);

td {
  display: block;
  border: 1px solid #ccc;
}
span {
  display: inline-block;
}
.icon {
  background: yellow;
  width: 3rem;
  text-align: center;
}
.label {
  font-weight: bold;
  width: 6rem;
}


.pie {
  margin-top: 4rem;
}

<!DOCTYPE html>
<html>
  <head>
    <title>Parcel Sandbox</title>
    <meta charset="UTF-8" />
  </head>

  <body>
    <table id="profiles">
      <tr id="profileRow"></tr>
    </table>
  </body>
</html>

about 4 years ago · Juan Pablo Isaza Report

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Accepted Answer · 2022-06-30T06:38:47.103Z

I think the issue is that you're looping twice over the elements. With the first for it should be enough

This is my go:

let items = [{
    id: "🐌",
    name: "snail"
  },
  {
    id: "🐜",
    name: "ant"
  },
  {
    id: "🪲",
    name: "beetle"
  },
  {
    id: "🐝",
    name: "honeybee"
  },
  {
    id: "🕷",
    name: "spider"
  },
];

//created a function so that we don't repeat the span creation
function createSpan(text, className) {
  let span = document.createElement('span')
  span.className = className;
  let textNode = document.createTextNode(text)
  span.append(textNode)
  return span
}

function createLabel(obj) {
  // let loc = document.getElementsByTagName("td");
  let loc = document.querySelectorAll("#profiles td");

  if (typeof obj !== "undefined" && obj !== null) {
    // loop through td's
    for (let i = 0; i < loc.length; i++) {
      // apply object data
      // loc.prependspan;
      //destructure the item so that we get its properties, it's the same as doing const id = items[i].id and const name=items[i].name but all in one line!
      const {
        id,
        name
      } = items[i]
      const iconSpan = createSpan(id, 'icon')
      // 'id' should get .icon
      // 'name' should get .label

      let labelSpan = createSpan(name, 'label')
      loc[i].prepend(iconSpan, labelSpan);
      // loc[i].insertAdjacentHTML('afterbegin', span);
      ;
    }
  }
}
createLabel(items);

<table id="profiles">
  <tr>
    <td>Snail Stuff</td>
    <td>Ant Stuff</td>
    <td>Beetle Stuff</td>
    <td>Honeybee Stuff</td>
    <td>Spider Stuff</td>
  </tr>
</table>

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Add array of objects as elements to existing table td

2 answers

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Andres GPT