I am new to javascript and I want to have 4 dropdowns. If "Salinas" is selected, I want the user to select the street. Howerver, I gave me an error. I tried nesting inside the object but I guess it's a syntax error. I searched all over the internet but I can't find a solution. Please somebody help. Thanks!
var stateObject = {
"California": {
"Monterey": ["Salinas": {"Street": ["Prunedale North", "Prunedale South"]}, "Gonzales"],
"Alameda": ["Oakland", "Berkeley"]
},
"Oregon": {
"Douglas": ["Roseburg", "Winston"],
"Jackson": ["Medford", "Jacksonville"]
}
}
window.onload = function () {
var stateSel = document.getElementById("stateSel"),
countySel = document.getElementById("countySel"),
citySel = document.getElementById("citySel"),
streetSel = document.getElementById("streetSel");
for (var state in stateObject) {
stateSel.options[stateSel.options.length] = new Option(state, state);
}
stateSel.onchange = function () {
countySel.length = 1; // remove all options bar first
citySel.length = 1; // remove all options bar first
if (this.selectedIndex < 1) return; // done
for (var county in stateObject[this.value]) {
countySel.options[countySel.options.length] = new Option(county, county);
}
}
stateSel.onchange(); // reset in case page is reloaded
countySel.onchange = function () {
citySel.length = 1; // remove all options bar first
if (this.selectedIndex < 1) return; // done
var cities = stateObject[stateSel.value][this.value];
for (var i = 0; i < cities.length; i++) {
citySel.options[citySel.options.length] = new Option(cities[i], cities[i]);
}
}
}<form name="myform" id="myForm">
<select name="optone" id="stateSel" size="1">
<option value="" selected="selected">Select state</option>
</select>
<br>
<br>
<select name="opttwo" id="countySel" size="1">
<option value="" selected="selected">Please select state first</option>
</select>
<br>
<br>
<select name="optthree" id="citySel" size="1">
<option value="" selected="selected">Please select county first</option>
</select>
<br>
<br>
<select name="optfour" id="streetSel" size="1">
<option value="" selected="selected">Please select county first</option>
</select>
</form>