Home
JS
JS
Tryit: JAVASCRIPT
运行 ❯
×
Change Orientation
Change Theme, Dark/Light
<!DOCTYPE html> <html> <body> <form id="myCarForm"> 最喜欢的车：<input type="text" name="fname" value="Volvo"> </form> <form id="myColorForm"> 最喜欢的颜色：<input type="text" name="favcolor" value="Blue"> </form> <p>单击该按钮可显示文档中每个表单元素的名称。</p> <button type="button" onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var x = document.forms; var txt = ""; var i; for (i = 0; i < x.length; i++) { txt = txt + x[i].id + "<br>"; } document.getElementById("demo").innerHTML = txt; } </script> </body> </html>