javascript - 初学者 Javascript 数组下拉列表

Question

这里是新手 JS，我需要从 10 个城市的数组中填充一个下拉列表，但我无法让任何代码工作。

<select id="selectCity">
<option>Choose a City</option>
</select>

var select = document.getElementById('selectCity');
var options = ["Winthrop","Revere","Malden","East Boston","Medford","Somerville","South Boston","Quincy","Malden","Weymouth"];

//what code will work in this loop below???

for(var i = 0; i < options.length; i++) { 

}

Answer 1

试试这个代码。

var select = document.getElementById('selectCity');
var options = ["Winthrop","Revere","Malden","East Boston","Medford","Somerville","South Boston","Quincy","Malden","Weymouth"];

for(var i = 0; i < options.length; i++) {
    var opt = options[i];
    var el = document.createElement("option");
    el.textContent = opt;
    el.value = opt;
    select.appendChild(el);
}​