try_dom_select_options 在线代码实例

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运行代码

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<!DOCTYPE html>
<html>
<head>
<script>
function getOptions(){
    var x=document.getElementById("mySelect");
    var txt="所有选项: ";
    var i;
    for (i=0;i<x.length;i++){
        txt=txt + "\n" + x.options[i].text;
    }
    alert(txt);
}
</script>
</head>
<body>
<form>
你喜欢的水果是：
<select id="mySelect">
  <option>苹果</option>
  <option>橙子</option>
  <option>菠萝</option>
  <option>香蕉</option>
</select>
<br><br>
<input type="button" onclick="getOptions()" value="输出所有选项">
</form>
    
</body>
</html>
 
 
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运行结果
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