Displaying List Of JavaScript Objects As HTML List Items

问题

When I attempt this, the HMTL page only displays the last object, instead of all the objects.

Here is my JavaScript file

var family = {
  aaron: {
    name: 'Aaron',
    age: 30
  },
  megan: {
    name: 'Megan',
    age: 40
  },
  aaliyah: {
    name: 'Aaliyah',
    age: 2
  }
}

var list = function(family) {
  for (var prop in family) {
    var elList = document.getElementById('aaron-family').innerHTML = prop;
  }
}

list(family);

And here's my HTML file

<html>
<head>
  <title>Aaron's Test With Objects</title>
</head>
  <li id="aaron-family">Hey, this is where it goes</li>
<footer>
  <script src="objects.js"></script>
</footer>
</html>

回答1:

Thank you guys! Here's the final solution I came up with:

var family = {
  aaron: {
    name: 'Aaron',
    age: 30
  },
  megan: {
    name: 'Megan',
    age: 40
  },
  aaliyah: {
    name: 'Aaliyah',
    age: 2
  }
}

var list = function(family) {
  for (var prop in family) {
    document.getElementById('aaron-family').innerHTML += '<li>' + prop + '</li>';
    console.log(prop);
  }
}

HTML

<html>
<head>
  <title>Aaron's Test With Objects</title>
</head>
<ul id="aaron-family">
</ul>
<footer>
  <script src="objects.js"></script>
</footer>
</html>

I'm sure it can be refactored but it works, visually.

回答2:

Well, you've got a couple problems there (<li> tag without a parent <ol> or <ul> tag, among others)...but I'd say the primary error is that you are replacing each subsequent output with each assignment to innerHTML.

Solution: assign a compiled array to innerHTML (using join to include spaces between the values)

var list = function(family) {
  var names = [];
  for (var prop in family) {
    names.push(prop.name);
  }
  document.getElementById('aaron-family').innerHTML = names.join(' ');
}
list(family);

回答3:

Remove elList because there is no point in having it...

Then change

document.getElementById('aaron-family').innerHTML = prop;

document.getElementById('aaron-family').innerHTML += prop;

That way you are not constantly setting the innherHTML to prop. Also, you might find it better to change the function to the following in order to prevent from constantly getting the element.

function list(family) {
  var elList = document.getElementById('aaron-family');
  for (var prop in family) {
    elList.innerHTML += prop;
  }
}

Hope this helps:)

回答4:

This dynamic way to render like this data format into HTML

const elList = document.getElementById('aaron-family')

function convertObjectsToArrayOfObjects(family) {
    const filteredData = []
    for(person in family){
          filteredData.push(family[person])
     }
    return filteredData;
 }

function elList(family) {
   const familyData = convertObjectsToArrayOfObjects(family)
   elList.innerHTML = `
      ${
        familyData.map(person => {
          return `
            <h1>name: ${person.name}</h1>
            <h2>age: ${person.age}</h2>
          `   
       })
     }
  `
}

list(family);

回答5:

Just you don't need to define function

html file:

var family = {
    aaron: {
        name: 'Aaron',
        age: 30
    },
    megan: {
        name: 'Megan',
        age: 40
    },
    aaliyah: {
        name: 'Aaliyah',
        age: 2
    }
}

for (var prop in family) {

    document.getElementById('aaron-family').innerHTML += '<li>' + prop + '</li>';

}

<html>
    <head>
        <title>Aaron's Test With Objects</title>
    </head>
    <body>

        <ul id="aaron-family">
        </ul>
        <script src="objects.js" type="text/javascript"></script>

    </body>
</html>

来源：https://stackoverflow.com/questions/35108777/displaying-list-of-javascript-objects-as-html-list-items

标签

javascript

html

object

for-loop

html-lists