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Hi, in my code, I want to check “undefined”. But it failed.
Can you please take a look?
arg is a string array which will be passed into the function createTable.
[CODE]function createTable(arg) {
// get the reference for the body
var body = document.getElementsByTagName(“body”)[0];
// creates a <table> element and a <tbody> element
var tbl = document.createElement(“table”);
var tblBody = document.createElement(“tbody”);
var rowCount = Math.round (arg.length / 8)+1;
// creating all cells
for (var j = 0; j < rowCount; j++) {
// creates a table row
var row = document.createElement(“tr”);
for (var i = 0; i < 8; i++) {
// Create a <td> element and a text node, make the text
// node the contents of the <td>, and put the <td> at
// the end of the table row
var cell = document.createElement(“td”);
var textFromDatabase = arg[i + 8 * j];
var cellText = document.createTextNode(textFromDatabase);
if (cellText.data == “undefined”) {
cellText = “”;
cell.appendChild(cellText);
}
else {
cell.appendChild(cellText);
}
row.appendChild(cell);
}
// add the row to the end of the table body
tblBody.appendChild(row);
}
// put the <tbody> in the <table>
tbl.appendChild(tblBody);
// appends <table> into <body>
body.appendChild(tbl);
// sets the border attribute of tbl to 2;
tbl.setAttribute(“border”, “2”);
}
Thanks