How can I set the selected value of a dropdown using javascript?
This is my HTML:
<select id=strPlan name=strPlan class=formInput>
<option value=0>Select a Plan</option>
</select>
I am using javascript to add values. Can anyone tell me how to call a function to select a value?
How can I set the selected value of a dropdown using javascript?
So, you want to change the value of the option that is currently selected. Is that correct?
function setValueOfSelected(select, valueToSetTo){
select.options[select.selectedIndex].value = valueToSetTo;
}
And call it like this:
setValueOfSelected(document.getElementById('strPlan'), 'selected');
In case you meant that you want to select an option based on its value, use this:
Declare this function:
function setOptionByValue(select, value){
var options = select.options;
for(var i = 0, len = options.length; i < len; i++){
if(options[i].value === value){
select.selectedIndex = i;
return true; //Return so it breaks the loop and also lets you know if the function found an option by that value
}
}
return false; //Just to let you know it didn't find any option with that value.
}
Now call that to set the option by value, like this, with the first parameter being the select element and the second being the value:
setOptionByValue(document.getElementById('strPlan'), '1');
