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编辑您的代码：
<!DOCTYPE html> <html> <body> <form oninput="x.value=parseInt(a.value)+parseInt(b.value)">0 <input type="range" id="a" value="50">100 +<input type="number" id="b" value="50"> =<output name="x" for="a b"></output> </form> <p><b>注释：</b>Internet Explorer 不支持 <output> 标签。</p> </body> </html>
查看结果: