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Add and delete rows dynamically in javascript

Source: Internet
Author: User
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<! Doctype html public "-// W3C // dtd html 4.0 Transitional // EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<Meta name = "Generator" CONTENT = "EditPlus">
<Meta name = "Author" CONTENT = "">
<Meta name = "Keywords" CONTENT = "">
<Meta name = "Description" CONTENT = "">
<Script language = "javascript"> // Example: obj = findObj ("image1 ");
Function findObj (theObj, theDoc)
{
Var p, I, foundObj;
If (! TheDoc) theDoc = document;
If (p = theObj. indexOf ("? ")> 0 & parent. frames. length)
{TheDoc = parent.frames[theobj.substring(p%1%].doc ument; theObj = theObj. substring (0, p);} if (! (FoundObj = theDoc [theObj]) & theDoc. all) foundObj = theDoc. all [theObj]; for (I = 0 ;! FoundObj & I <theDoc. forms. length; I ++) foundObj = theDoc. forms [I] [theObj]; for (I = 0 ;! FoundObj & theDoc. layers & I <theDoc. layers. length; I ++) foundObj = findobj(theobj,thedoc.layers? I =.doc ument); if (! FoundObj & document. getElementById) foundObj = document. getElementById (theObj); return foundObj;
}
// Add a participant Field
Function AddSignRow () {// read the row number of the last row, which is stored in the txtTRLastIndex text box.
Var txtTRLastIndex = findObj ("txtTRLastIndex", document );
Var rowID = parseInt (txtTRLastIndex. value );

Var signFrame = findObj ("SignFrame", document );
// Add rows
Var newTR = signFrame. insertRow (signFrame. rows. length );
NewTR. id = "SignItem" + rowID;

// Add a column: Sequence Number
Var newNameTD = newTR. insertCell (0 );
// Add column content
NewNameTD. innerHTML = newTR. rowIndex. toString ();

// Add a column: Name
Var newNameTD = newTR. insertCell (1 );
// Add column content
NewNameTD. innerHTML = "<input name = 'txtname" + rowID + "'id = 'txtname" + rowID + "'Type = 'text' size = '12'/> ";

// Add a column: Email
Var newEmailTD = newTR. insertCell (2 );
// Add column content
NewEmailTD. innerHTML = "<input name = 'txtemail" + rowID + "'id = 'txtemail" + rowID + "'Type = 'text' size = '20'/> ";

// Add column: phone number
Var newTelTD = newTR. insertCell (3 );
// Add column content
NewTelTD. innerHTML = "<input name = 'txttel" + rowID + "'id = 'txttel" + rowID + "'Type = 'text' size = '10'/> ";

// Add column: Mobile Phone
Var newMobileTD = newTR. insertCell (4 );
// Add column content
NewMobileTD. innerHTML = "<input name = 'txtmobile" + rowID + "'id = 'txtmobile" + rowID + "'Type = 'text' size = '12'/> ";

// Add column: Company Name
Var newCompanyTD = newTR. insertCell (5 );
// Add column content
NewCompanyTD. innerHTML = "<input name = 'txtcompany" + rowID + "'id = 'txtcompany" + rowID + "'Type = 'text' size = '20'/> ";


// Add column: delete button
Var newDeleteTD = newTR. insertCell (6 );
// Add column content
NewDeleteTD. innerHTML = "<div align = 'center' style = 'width: 40px '> <a href = 'javascript :; 'onclick = \ "DeleteSignRow ('signitem" + rowID + "') \"> Delete </a> </div> ";

// Push the row number to the next row
TxtTRLastIndex. value = (rowID + 1). toString ();
}
// Delete a specified row
Function DeleteSignRow (rowid ){
Var signFrame = findObj ("SignFrame", document );
Var signItem = findObj (rowid, document );

// Obtain the Index of the row to be deleted
Var rowIndex = signItem. rowIndex;

// Delete the row of the specified Index
SignFrame. deleteRow (rowIndex );

// Rearrange the sequence number. If no sequence number exists, this step is omitted.
For (I = rowIndex; I <signFrame. rows. length; I ++ ){
SignFrame. rows [I]. cells [0]. innerHTML = I. toString ();
}
} // Clear the list
Function ClearAllSign (){
If (confirm ('Are you sure you want to clear all participants? ')){
Var signFrame = findObj ("SignFrame", document );
Var rowscount = signFrame. rows. length;

// Delete rows cyclically from the last row
For (I = rowscount-1; I> 0; I --){
SignFrame. deleteRow (I );
}

// Reset the last row number to 1
Var txtTRLastIndex = findObj ("txtTRLastIndex", document );
TxtTRLastIndex. value = "1 ";

// Pre-Add a row
AddSignRow ();
}
}
</Script>
</HEAD>
<BODY>
<Div>
<Table width = "613" border = "0" cellpadding = "2" cellspacing = "1" id = "SignFrame">
<Tr id = "trHeader">
<Td width = "27" bgcolor = "#96E0E2"> NO. </td>
<Td width = "64" bgcolor = "#96E0E2"> User Name </td>
<Td width = "98" bgcolor = "#96E0E2"> email </td>
<Td width = "92" bgcolor = "#96E0E2"> landline phone </td>
<Td width = "86" bgcolor = "#96E0E2"> mobile phone </td>
<Td width = "153" bgcolor = "#96E0E2"> company name </td>
<Td width = "57" align = "center" bgcolor = "#96E0E2"> & nbsp; </td>
</Tr>
</Table>
</Div>
<Div>
<Input type = "button" name = "Submit" value = "add participant" onclick = "AddSignRow ()"/>
<Input type = "button" name = "Submit2" value = "clear" onclick = "ClearAllSign ()"/>
<Input name = 'txttrlastindex' type = 'den den 'id = 'txttrlastindex' value = "1"/>
</Div>
</BODY>
</HTML>


Author: zmyxmjz

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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