Is there a way to use javascript to set the selected value of a dropdown?
Here is the HTML code I am working with:
<select id="strPlan" name="strPlan" class="formInput">
<option value="0">Select a Plan</option>
</select>
I am trying to dynamically add values using javascript. Can anyone provide guidance on how to call a function to select a specific value?
How can I set the selected value of a dropdown using javascript?
If you are looking to change the value of the currently selected option in a dropdown, you can achieve that with the following JavaScript code:
function setSelectedValue(selectElement, valueToSet){
selectElement.options[selectElement.selectedIndex].value = valueToSet;
}
To use this function, simply call it like this:
setSelectedValue(document.getElementById('strPlan'), 'selected');
For a live demonstration, you can check out this Demo
If you are looking to select an option in the dropdown based on its value, you can use the following function:
Define this function in your JavaScript:
function selectOptionByValue(selectElement, value){
var options = selectElement.options;
for(var i = 0; i < options.length; i++){
if(options[i].value === value){
selectElement.selectedIndex = i;
return true;
}
}
return false;
}
To set the option by its value, use the function like this:
selectOptionByValue(document.getElementById('strPlan'), '1');
For a demonstration, you can visit this Demo
This method seems promising to me:
function updateDropDownSelection(element, newValue)
{
let foundValue = false;
for (let i = 0; i < element.options.length; i++) {
if (element.options[i].value == newValue) {
element.options[i].selected = true;
foundValue = true;
}
}
if (!foundValue)
element.options[0].selected = true;
}
I came across this solution here. Try searching for 'set selected value dropdown javascript' on Google for more options.
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