使用<select>值作为javascript var

Question

我试图将段落更改为选定的值。 var char = document.getElementById（“character”）。value; function build（）{   document.getElementById（“output”）。innerHTML = char; } ＆lt; select onchange = build（）id = character＆gt;                 ＆lt; option value = dog＆gt; dog＆lt; / option＆gt;                 ＆lt; option value = cat＆gt; cat＆lt; / option＆gt;                 ＆lt; option value = moose＆gt; moose＆lt; / option＆gt;             ＆LT; /选择＆GT; ＆lt; p id = output＆gt;＃＆lt; / p＆gt;

Answer 1

我刚修改了你的代码，请查看

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function build(val) {
  console.log(val);
  document.getElementById("output").innerHTML = val;
}

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<select onchange=build(value) id=character>
                <option value=dog>dog</option>
                <option value=cat>cat</option>
                <option value=moose>moose</option>
            </select>
<p id=output>#</p>

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