javascript 如何在同一页面回显输入值？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/14546219/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How echo input value in same page?
提问by Sudha Sarath
Have a coding:
有一个编码：
if(!$fgmembersite->CheckLogin())
{ $loggedin="0";} else { $loggedin="1"; }
if ($loggedin=="1") { echo "<form method=\"post\">
<input type=text id=\"nameField\" name=\"nameField\" value=\"". $fgmembersite->UserFullName() ." \"/></form>"; }
Want to echo again the nameField likE:
想再次回显 nameField likeE：
<?php echo $nameField ?>
How is this possible?
这怎么可能？
回答by Ondra ?i?ka
<form action="the-same-page.php">
... your code...
<input type="submit">
</form>
<?php echo $_POST['nameField'] ?>
If you need it without submit, then it's client-side only action.
如果您不需要提交就需要它，那么它只是客户端的操作。
<input type="text" id="foo"
onchange="document.getElementById('output').innerHTML = this.value"/>
<div id="output">output will be here</div>
回答by Stuart Elliot
<? echo $_POST['nameField']; ?>
This is echo Posted Value...
这是回声贴值...
回答by vlcekmi3
Without resfreshing the page / submitting the form you need to use javascript.
在不刷新页面/提交表单的情况下，您需要使用 javascript。
Include jquery then you can do something like this
包括 jquery 然后你可以做这样的事情
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js"></script>
<script>
$(document).ready(function(){
jQuery("#nameField").keyup(function () {
var value = $(this).val();
$("#xx").text(value);
});
});
</script>
<?php
echo '<form action="" method="post">
<input type="text" id="nameField" name="nameField" value="'.$fgmembersite->UserFullName().'" />
</form>';
?>
<span id="xx"></span>
