how to show the value that is selected in drop down menu by the user using javascript

 <select name="place" id="place" onchange="spk();">
<option></option>
<option value="1">California</option>
<option value="2">New York</option>
<option value="3">Las Vegas</option>
<option value="4">Texas</option>
<option value="5">Ohio</option>
</select>

<div id="speak"></div>

<script>
function spk(){
    var b = document.getElementById("place");
    var c = b.options[b.selectedIndex].value; // this shows the selected option's value
    var d = b.options[b.selectedIndex].text; // this shows the selected option's text
    var e = "You have selected ";
    document.getElementById("speak").innerHTML = e.concat(d);
}
</script>

load dynamic forms based on drop down selected by user

hi,
well there are many ways of doing this. i have done it the following way:-
HTML
<div id="spc">
<select id="selectform" onChange="selfo();">
<option value="0">0</option>
    <option value="1">1</option>
    <option value="2">2</option>
    <option value="3">3</option>  
</select>
      <form id="abc" style="display:none">
      <input>
      </form>
      <form id="def" style="display:none">
      <input><input>
      </form>
      <form id="ghi" style="display:none">
      <input><input><input>
      </form>
      </div>

//javascript
    <script>
function selfo()
{
var a = document.getElementById("selectform").value;
if(a == 1){
document.getElementById("abc").style.display = "block";
document.getElementById("def").style.display = "none";
document.getElementById("ghi").style.display = "none";
}
else if(a == 2){
document.getElementById("def").style.display = "block";
document.getElementById("abc").style.display = "none";
document.getElementById("ghi").style.display = "none";
}
else if(a == 3){
document.getElementById("ghi").style.display = "block";
document.getElementById("abc").style.display = "none";
document.getElementById("def").style.display = "none";
}
else if(a == 0){
document.getElementById("spc").style.display = "none";
}
}
    </script>  
  

how to get no of days in the current month(count)?

$da = date('d'); // gets the current day of the month
$mth = date('m');    // gets the current month
$yr = date('Y');   // gets the current year
$daysinmonth = cal_days_in_month(CAL_GREGORIAN,$mth,$yr);

echo $daysinmonth;   // this will echo the total no of days in the current month

now you might also want to use the no of days left in the current month from the current day, here's how that's done:-

$baldays = $daysinmonth - $da;

echo $baldays;    // this would echo out the no of days remaining for the current month to end

how to automatically get the first date of the current month in mysql

there are several ways of doing it. here is how i do it. it just feels simpler this way :)


$mth = date('m');                               // gets the current month
$yr = date('Y');                                   // gets the current year

For example, if i want to run a query to get results between the first day of the current month and today, i would write it like this:-

"SELECT * FROM table WHERE date BETWEEN '$yr-$mth-01' AND CURDATE( )"

how to change all to UPPERCASE in an input box

for a text box, here's the code.

<input type="text" onblur="this.value=this.value.toUpperCase()" name="" placeholder="all of this will be uppercase" />

How to update mysql table ignoring the duplicate fields that are already present

here's how you do it.

INSERT INTO thetable (pageid, name, somefield)
VALUES (1, "foo", "first")
ON DUPLICATE KEY UPDATE (somefield = 'first')

taken from

http://stackoverflow.com/questions/2219786/best-way-to-avoid-duplicate-entry-into-mysql-database

Update one Mysql table with results from another table on a different database

here's how you update one table with results from another database query.


UPDATE
target_database.target_table A                                //database to be updated-target
INNER JOIN source_database.source_table B     //join source database to target
ON B.ProductID = A.ProductID                          //join fields
SET A.Markup = B.Markup                                         //fields to be updated