Dynamically creating a table in Javascript

Question

I have got a working table that when the button is pushed, a table is dynamically created by looping through an array and displaying that data in each cell.

However the problem arises when I am trying to add a table header for my table, and I'm not sure what I am doing wrong.

Here is my current working code: (although doesn't seem to work in JSFiddle?!)

And here is the code I am trying to add: (which must be wrong)

var thd=document.createElement("thead");
tab.appendChild(thd);

var tr= document.createElement("tr"); 
tbdy.appendChild(tr); 

var th= document.createElement("th");
th.appendChild(document.createTextNode("Name");
tr.appendChild(th);

Any help would be greatly appreciated,

You need to set the jsfiddle to not wrap the code in an onload event. jsfiddle.net/ahEkH/1 — JJJ
– JJJ, Commented May 31, 2014 at 21:42
You forgot to "close" the input, that's why the jsFiddle is not working: jsfiddle.net/ahEkH/3 — Waclock
– Waclock, Commented May 31, 2014 at 21:46
And the header works as well as long as you fix the missing ) in the second to last line. jsfiddle.net/ahEkH/2. Time to learn how the JavaScript error console works. — JJJ
– JJJ, Commented May 31, 2014 at 21:46
Instead of tbdy.appendChild(tr); you probably wanted to write thd.appendChild(tr);, no? — c-smile
– c-smile, Commented May 31, 2014 at 21:53

dfsq · Accepted Answer · 2014-05-31 21:50:38Z

0

You can use a loop to avoid duplicating code. For example:

var columns = ["Name", "Age", "Degree"];

var thd = document.createElement("thead");
tab.appendChild(thd);

var tr = document.createElement("tr"); 
thd.appendChild(tr);

for (var i = 0; i < columns.length; i++) {
    var th = document.createElement("th");
    th.appendChild(document.createTextNode(columns[i]));
    tr.appendChild(th);    
}

Demo: http://jsfiddle.net/ahEkH/6/

answered May 31, 2014 at 21:50

dfsq

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Demo: http://jsfiddle.net/ahEkH/6/

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