How do I pass a JS variable into the “value=” parameter of an INPUT statement
Question
The example below should display the value from the JS as the value in the INPUT statement but does not.
<html>
<body>
<script type="text/javascript">
var qty = 1;
if (qty<3)
{
var shipping=1.92;
var shp_method="USPS First Class Package";
}
else if (qty>=3 && qty<14)
{
var shipping=4.85;
var shp_method="USPS Small Flat Rate Package";
}
else
{
var shipping=10.82;
var shp_method="USPS Medium Flat Rate Package";
}
</script>
<input type="text" name="shp_method" value="<?=shp_method;?>" TEXT STYLE="text-align:center" readonly="readonly" size="30">
</body>
</html>
3 answers
solution1
3 2010-12-26 08:56:20
The syntax you are using:
value="<?=shp_method;?>"
is valid only for PHP.
If you want to do with javascript, you can do something like this:
document.getElementById('#textbodID').value = shp_method;
Your code should be like this:
<script type="text/javascript">
window.onload = function(){
var qty = 1;
if (qty<3)
{
var shipping=1.92;
var shp_method="USPS First Class Package";
}
else if (qty>=3 && qty<14)
{
var shipping=4.85;
var shp_method="USPS Small Flat Rate Package";
}
else
{
var shipping=10.82;
var shp_method="USPS Medium Flat Rate Package";
}
document.getElementById('#textbodID').value = shp_method;
};
</script>
Where textbodID is assumed to be the id of your input field which can be assigned like this:
<input id="textbodID" />
solution2
1 2014-02-09 06:40:29
try like this:
<input type="text" name="ye" id="yea"> //input box
<script type="text/javascript">
var mytime=new Date();
document.getElementById("yea").value=(mytime.getFullYear());
</script>
<input type="submit" value="Submit" name="submit">// use submit button to get input value
then use scriplet tag in same jsp page:
like this:
<% String y=request.getParameter("submit");
if(y.equals("Submit"))
{
String s=request.getParameter("ye");
System.out.println(s);
}
%>
after click submit you can see javascript value in your console. then save this string value in your database and then u can access this String everywhere. please don't copy and paste this example. just try to write in your page to avoid errors.
solution3
0 2010-12-26 09:11:17
First of all add an id attribute to the input. this will automatically set the value as soon as the page loads:
window.onload = function (){
var qty = 1;
if (qty<3)
{
var shipping=1.92;
var shp_method="USPS First Class Package";
}
else if (qty>=3 && qty<14)
{
var shipping=4.85;
var shp_method="USPS Small Flat Rate Package";
}
else
{
var shipping=10.82;
var shp_method="USPS Medium Flat Rate Package";
}
document.getElementById('inputId').value = shp_method;
}
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