Change HTML SELECT OPTIONs using a json object in FBJS
I have a html select input with a default set of options (it has an ID). I also have a json object that looks like
var replacement_options = {'value 1':'display 1', 'value 2':'display 2' ....
How would I replace the options in the select with the values and displays from the json object using Facebook JS开发者_StackOverflow社区? (FBJS)
After piecing some stuff together, I was able to create a function to do this.
//accepts a object for options {value1:display1, value2:display2...
function updateSelectOptionsWithJSON(element_id, options, first_display, first_value)
{
var choiceList = document.getElementById(element_id);
for(var count = choiceList.getOptions().length - 1; count > -1; count--)
{
var node = choiceList.getOptions()[count];
choiceList.removeChild(node);
}
//you can remove these next 4 lines and the last two parameters of this function
//if you just want options to come from the secton parameter
var node = document.createElement('option');
node.setTextValue(first_display);
node.setValue(first_value);
choiceList.appendChild(node);
for(key in options)
{
var node = document.createElement('option');
node.setTextValue(options[key]);
node.setValue(key);
choiceList.appendChild(node);
}
}
try playing with the FBJS function selectNode.removeChild described in the FBJS wiki entry FBJS
you will also need to use
var option = document.createElement('option');
selectNode.appendChild(option);
to create the option nodes inside the select node
加载中,请稍侯......
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