以下工作代码从头部获取所有元标记,并在网页上显示div内的文本。在keyup上,我想复制输入文本val并替换头元描述并更新div,以便我可以看到文本已从前端正确输入。
http://jsfiddle.net/michelm/JCWgA/
我遇到的两件事:
下面的一些代码:
<h2>Meta Description</h2>
<!-- I have head meta tags inside the below div to read the tags on the web page -->
<div class="all">some text</div>
<!-- input text on keyup to 1. update head meta description, 2 update meta description inside the div (<div class="all">some text</div>) -->
<input type="text" name="metadescription" id="metadescription" />
<!-- this part of jquery is working -->
<script type="text/javascript">
var foo = '';
$("head meta").each(function () {
foo += $(this).clone().wrap('<div>').parent().html();
});
//alert(foo);
var b = $('.all').text(foo);
// the below is part is not quite working
$description = $('.all').find('meta[name=description]').attr('content');
$('#metadescription').keyup(function(){
// $('.all').find($description).text($(this).val());
//the below just replace all the text, but I want it to replace the 'content'
$('.all').text($(this).val());
//alert(foo);
});
</script>
我得到了这个工作,很大一部分感谢softsdev的大部分代码:))
* 以下是完整的工作代码!!!! **
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<meta name="description" content="This is the meta description of some sort" >
<meta name="keywords" content="some, content, added" >
<title>change meta content</title>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript">
$( document ).ready(function(){
$('.content').keyup(function(){
$('meta[name=description]').attr('content', $(this).val());
});
});
</script>
</head>
<body>
<h2>Meta Description</h2>
<div class="all">some text</div>
<h4>Update meta description</h4>
<input type="text" name="content" class="content"/>
<script type="text/javascript">
$('.content').keyup(function(){
$('.all').text('<meta name="description" content="'+$(this).val()+'">');
});
$('.all').append(($('meta[name=descritption]').attr('content')));
var tt = jQuery.metadata.get(name=descritption)
$('.all').text(tt);
$('meta[name=description]').attr('description').insertAfter('body');
</script>
<script language="JavaScript">
if (document.getElementsByName) {
var metaArray = document.getElementsByName('description');
for (var i=0; i<metaArray.length; i++) {
// document.write(metaArray[i].content + '<br>');
$('.all').text('<meta name="description" content="'+ metaArray[i].content +'">' );
}
}
</script>
</body>
</html>
答案 0 :(得分:1)
你可以像example
那样做更改
$('.all').text($(this).val());
与
$('.all').text('<meta http-equiv="content-type" content="'+$(this).val()+'">');
更新了答案
如果您想在HTML中执行此操作,那么您可以尝试这一点并检查firebug内容是否会更改元标记
但它只会反映在客户端
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<meta name="description" content="This is the meta description of some sort" >
<meta name="keywords" content="some, content, added" >
<title>change meta content</title>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript">
$( document ).ready(function(){
$('.content').keyup(function(){
$('meta[name=description]').attr('content', $(this).val());
});
});
</script>
</head>
<body>
<input type="text" name="content" class="content"/>
</body>
</html>