Bootstrap

H5中写一个下拉框,点击下拉框内容会出现在文本域中

朋友出去面试做的面试题,分享了下,我就拿来做做。原题:

HTML中有个下拉框,包含“风,雨,雷,电”,添加事件,当选择风时,文本域内出现选择

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form name="form_name" >
    <select name="select_name"   onChange="ShowToText(); "  >
        <option value="1">风</option>
        <option value="2">雨</option>
        <option value="3">雷</option>
        <option value="4">电</option>
    </select><br>

    <textarea rows="3" cols="30"name="textfield_name3">
    </textarea>
</form>
</body>
<script language="JavaScript">
    function ShowToText(){
        document.form_name.textfield_name3.value=document.form_name.select_name.options[document.form_name.select_name.selectedIndex].text
    }
</script>
</html>

运行效果

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