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validation using javascript of multiple add rows

Posted on 2011-03-15
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Last Modified: 2013-12-13
Hello,

I want validation of mandatory for below attached script,

I have name field like name="txt[]",Its contains multiple rows of answer..
I want to validate all added field .


<SCRIPT language="javascript">
        function addRow(tableID) {
 
            var table = document.getElementById(tableID);
 
            var rowCount = table.rows.length;
            var row = table.insertRow(rowCount);
 
            var colCount = table.rows[0].cells.length;
 
            for(var i=0; i<colCount; i++) {
 
                var newcell = row.insertCell(i);
 
                newcell.innerHTML = table.rows[0].cells[i].innerHTML;
                //alert(newcell.childNodes);
                switch(newcell.childNodes[0].type) {
                    case "text":
                            newcell.childNodes[0].value = "";
                            break;
                    case "checkbox":
                            newcell.childNodes[0].checked = false;
                            break;
                    case "select-one":
                            newcell.childNodes[0].selectedIndex = 0;
                            break;
                }
            }
        }

<TABLE id="dataTable" width="350px" border="1">
        <TR>
            <TD><INPUT type="checkbox" name="chk[]"/></TD>
            <TD><INPUT type="text" name="txt[]"/></TD>
            <TD>
                <SELECT name="country[]">
                    <OPTION value="india">India</OPTION>
                    <OPTION value="germany">Germany</OPTION>
                    <OPTION value="france">France</OPTION>
                    <OPTION value="usa">United States</OPTION>
                    <OPTION value="china">china</OPTION>
                </SELECT>
            </TD>
        </TR>
    </TABLE>

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javascriptvalidataion.png
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Question by:vravi22
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5 Comments
 
LVL 17

Expert Comment

by:Shinesh Premrajan
ID: 35146124
 <TD><INPUT type="text" name="txt[]" id="txt"/></TD>

You can try assigning the id to the input field, so you can get the input field by ID


var obj= document.getElementById("txt");

if(obj.value==''){
alert("Please enter a value");
return false;
}

You can try same for other fields also.

Hope this helps
0
 

Author Comment

by:vravi22
ID: 35146638
same thing i also tried but problem is when 2nd row  is not validated.. here id is txt validating for only 1 st row.
I want to increment id according to the add row..
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LVL 17

Accepted Solution

by:
Shinesh Premrajan earned 1500 total points
ID: 35146691
Hope this helps
var obj= document.getElementsByName('txt');
 for(var i=0;i<obj.length;i++){
	if(obj[i].value==''){
		alert("Please enter a value");
		}
}

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0
 

Author Comment

by:vravi22
ID: 35146980
This is worked for me .. I have changed txt to txt[] then taking whole array..


Thank you..
0
 

Author Closing Comment

by:vravi22
ID: 35146990
This solution worked for me..
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