CODEWITHSUNDEEP
javascriptjquery
user3753569
user3753569

Reputation: 1853

How to create an array of values from LI inside a UL

I have a control which allows users to sort the <li> in whatever order they want. when the form submits I want to grab the text inside the <li> for each <li> put into an array, in the order on the form.

<ul id="sortable">
    <li class="ui-state-default">
        <span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Protective Services
    </li>
    <li class="ui-state-default">
        <span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Engineering Services and Public Works
    </li>
</ul>

I am grabbing the <li>'s with:

var ar = [];
ar = document.getElementById("sortable").getElementsByTagName("li");

I then go through the array:

for(i = 0; i < ar.length; i++){
    alert(ar[i].text());    //ar[i].anything results in console errors.
}

ar[i] displays [object HTMLLIElement] for every <li> available. if I try to access the .text/.val/id properties inside the items i get a console error. So I'm assuming this has to do with a parsing/conversion issue?

How do I properly create an array that looks like protective services,Engineering Services and Public Works and NOT like [object HTMLLIElement],[object HTMLLIElement]? Or how do I access my text information from the <li> as a [object HTMLLIElement]?

Upvotes: 2

Views: 7153

Answers (6)

TheStatehz
TheStatehz

Reputation: 310

jQuery solution:

$('li', '#sortable').each(function(){
    alert($(this).text()); 
});

Or to fix your solution in pure JS:

var ar = [];
ar = document.getElementById("sortable").getElementsByTagName("li");

for (i = 0; i < ar.length; i++) {
    alert(ar[i].innerText);
}

See fiddle.

Upvotes: 0

Giannis Grivas
Giannis Grivas

Reputation: 3412

Use :

var ar = [];
var listItems = $("#sortable li");
listItems.each(function(li) {
    ar.push($(this).text());
});

Working here: http://jsfiddle.net/csdtesting/0uddfms6/

Upvotes: 0

Patrick Evans
Patrick Evans

Reputation: 42736

You need to use the properties ar[i].innerText or ar[i].textContent on DOM nodes. The method .text() would be used if you had a jQuery object

var lis = document.getElementById("sortable").getElementsByTagName("li");

var data = [];
for(var i=0; i<lis.length; i++){
   data.push(lis[i].innerText);  
}

var jsonFormated = JSON.stringify(data);
document.getElementById("log").innerHTML = jsonFormated;
<ul id="sortable">
  <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Protective Services</li>
  <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Engineering Services and Public Works</li>
</ul>


<div id="log"></div>

Upvotes: 1

netchkin
netchkin

Reputation: 1384

the problem is that you work with the HTMLElement, which is of vanilla js, not jQuery. Try .innerHTML instead of .text()

Upvotes: 0

marty
marty

Reputation: 484

For a pure javascript solution use the innertext property 

alert(ar[i].innerText);

Fiddle: http://jsfiddle.net/3fjursaw/

Upvotes: 3

loveNoHate
loveNoHate

Reputation: 1547

You need to get the jQuery object in order to use text():

alert($(ar[i]).text());

JSFIDDLE: http://jsfiddle.net/rh6ufn23/1/.

Upvotes: 1

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