Why no sort header?

Why no sort header?

mikezangmikezang Posts: 4Questions: 2Answers: 1

I just include js and css in my html, but I can't view the sortable header, and I also found a error as "undefined is not an object (evaluating 'c.mData'", the source like this, how can I do?

h(r[0]).children("th, td").each(function(a, b) {
var c = n.aoColumns[a];
if (c.mData ===
a) {

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