constructing dynamic divs in jquery and javascript

Question

Hmmm All the answers I've seen here suggest that this should work, but...

Is...

    var qnDivName = "qnDiv" + i;
    var currentQnDiv = document.createElement("div");
    var qnDivId = document.createAttribute("id");
    qnDivId.nodeValue = qnDivName;
    currentQnDiv.setAttributeNode(qnDivId);
    currentQnDiv.className = "questionContainer";

equivalent to...

    var currentQnDiv = $("<div/>", {
        "class": "questionContainer",
        id: "qnDiv" + i
    });
    alert("qndiv class: " + currentQnDiv.className);

?

The alert gives 'undefined'. The 'i' is from a for loop. I'm dynamically creating divs to attach to a document further down the page...

    testDiv.appendChild(currentQnDiv);      
  } //end for loop

the ordinary js works, but the jQuery doesn't. I have other jQuery that works in a calling function, so...

Any ideas?

Wow! that was fast. Thanks for the answers. get(0) does indeed return the desired "questionContainer", however, I still have the same problem. The above js works, the jquery does not. Is var currentQnDiv = ... really referencing a div? later code wants to add images to it and then, as shown, currentQnDiv is added to its parent, testDiv. — grooble
– grooble, Commented Sep 11, 2012 at 14:14
Got it! Changed it a bit to: var currentQnJQ = (see above), and then, currentQnDiv = currentQnJQ[0]; Thanks all. On my way to reducing a 300 line js file to about 100 jquery, i think... — grooble
– grooble, Commented Sep 11, 2012 at 14:20

Denys Séguret · Accepted Answer · 2012-09-11 14:05:07Z

2

Use

alert("qndiv class: " + currentQnDiv.get(0).className);

Your currentQnDiv object is a jQuery collection, not a basic Dom object.

answered Sep 11, 2012 at 14:05

Denys Séguret

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Comments

Simon · Accepted Answer · 2012-09-11 14:05:29Z

1

className isn't a valid jQuery property. You should use currentQnDiv[0].className instead

answered Sep 11, 2012 at 14:05

Simon

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Patriks · Accepted Answer · 2012-09-11 14:08:15Z

1

$("<div/>").addClass("questionContainer")
           .attr("qnDiv" + i).appendTo("body");

body Can be replaced with id of element where you want to append this div.

answered Sep 11, 2012 at 14:08

Patriks

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Patriks · Accepted Answer · 2012-09-11 14:12:48Z

1

otherwise

var currentQnDiv = $("<div/>");
currentQnDiv.addClass("questionContainer");
currentQnDiv.attr("qnDiv" + i).appendTo("body");

answered Sep 11, 2012 at 14:12

Patriks

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Niels Thiebosch · Accepted Answer · 2012-09-11 14:06:48Z

0

Should class really be in "" ?

var currentQnDiv = $("<div/>", {
    class: "questionContainer",
    id: "qnDiv" + i
});

Just my thought, not enough time to test it myself.

answered Sep 11, 2012 at 14:06

Niels Thiebosch

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