7-6 编程练习

来源：7-6 编程练习

RobinZang

2019-09-20 16:02:43

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
<title>Document</title>
    <script type="text/javascript" src="index.js"></script>
</head>
<body onload="address()">
<form>
省份：
<!--  请在此补充代码 -->
<select id="province"></select>
市/区：
<!--  请在此补充代码 -->
<select id="city"></select>
</form>
</body>
</html>

function address(){
    /*请在此补充代码*/  
    var province = document.getElementById("province");
    var city = document.getElementById("city");
	selectAdd(province,"北京市","北京市");
	selectAdd(province,"天津市","天津市");
	selectAdd(province,"河北省","河北省");
	selectAdd(province,"河南省","河南省");
	selectAdd(city,"朝阳区","朝阳区");
	selectAdd(city,"西城区","西城区");
	selectAdd(city,"石家庄","石家庄");
	selectAdd(city,"邯郸市","邯郸市");
	selectAdd(city,"西青区","西青区");
	selectAdd(city,"武清区","武清区");
	selectAdd(city,"郑州市","郑州市");
	selectAdd(city,"开封市","开封市");
}
function selectAdd(obj,name,value){
	/*请在此补充代码*/  
	obj.options.add(new Option(name, value));
}

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