Código PHP:
function anadir() {
i = i + 1;
if (i <=9){
var table = document.getElementById('lineaPedido');
var row = table.insertRow(-1);
var cell, text;
for (var j=0; j<9; j++) {
cell = row.insertCell(0);
cell.appendChild(document.createTextNode(text));
cell.setAttribute("id","miCol"+ j + "" + i);
if (j==7){
cell.innerHTML = document.getElementById("item").value;
}else if (j==6) {
cell.innerHTML = document.getElementById("datos_udm").innerHTML;
}
//etc...
}
}
}