JS method for dynamically adding and deleting table rows

This article illustrates JS's method of dynamically adding and deleting table rows. To share with you for your reference, as follows:

function insertRow(tableName,className,bgcolor, cellContentArray){
 var t = document.getElementByIdx(tableName); // achieve table table 
 var tr = t.insertRow();  // insert 1 line 
 tr.className=className;  // Set up the css
 tr.bgcolor=bgcolor;   // Sets the background color of the row 
 for( var i=0;i<cellContentArray.length;i++){
 var td = tr.insertCell(); // insert 1 column 
 td.innerHTML=cellContentArray[i]; // Set column content 
 }
}
function deleteRow(tableName,btn){
 var t = document.getElementByIdx(tableName); // achieve table table 
 var tr = btn.parentNode.parentNode; // Get the corresponding row 
 t.deleteRow(tr.rowIndex);
}

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I hope this article is helpful to JavaScript program design.