在select中选择值时如何将值加载到文本字段 [英] How to load value to text field when choose value in select
问题描述
大家好，我有问题需要帮助，我有一个表格有1个选择字段和1个文本字段，我想在选择文本字段的选项中选择值时会加载/显示值与值的比例选择，当我在选择字段中选择B时，图片中的示例，文本字段中的值将显示为1，那么如何操作，我需要示例参考，指导或演示示例，感谢阅读我的主题。
这是图像：
http://i1095.photobucket.com/albums/i472/OLAKEN91/gdf_zpsac464e04.jpg [ ^ ]
Hi every one, I have problem need help that, I have a form have 1 select filed and 1 text field, I want when I choose value in option of select the text field will load/appear value in proportion to value of select, example in picture when I choose "B" in select field, the value in text filed will appear "1", so how to do it, I need example to refer, guide or demo example, Thank for read my topic.
Here is Image:
http://i1095.photobucket.com/albums/i472/OLAKEN91/gdf_zpsac464e04.jpg[^]
<head>
<title>Untitled Document</title>
<style type="text/css">
</style>
</head>
<body>
<center>
<br />
<form id="cv" action="" method="">
Choose Option: <select id="chedo">
<option>--Choose Value--</option>
<option>A</option>
<option>B</option>
<option>C</option>
</select>
<br />
<br />
Value: <input type="text" id="lenh" size="40"/>
<br />
<br />
<input type="submit" value="SUBMIT"/>
</form>
</center>
</body>
</html>
推荐答案
感谢大家的阅读和帮助，这里是代码
thank for read and help of everyone, here is code
<script type="text/javascript" language="javascript">
（#ched）。change（function（）{
var selected =
("#chedo").change(function(){ var selected =
（＃chedo）。val（）;
("#chedo").val();
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