检索变量值 - 非输入
[英]Retrieve variable value - non input
问题描述
I have a PHP File with something like this: 
我有一个这样的PHP文件：
<script type="text/javascript">
var page = '1';
</script>
<select class='search' name="type" ID="type">
<option value='%'>All Types</option>
.....
</select>
I know how to retrieve the value of the type with JQuery. 我知道如何使用JQuery检索该类型的值。
Is there a way (besides a hidden field) to retrieve the value of the JavaScript variable page ? 有没有办法（除了隐藏字段）检索JavaScript变量page的值？ I have tried this but keep getting undefined: 我试过这个但是一直未定义：
var page = $("#" + this.page).val();
3 个解决方案
解决方案1
3 已采纳 2012-06-11 23:55:08
Your variable page is global throughout the scope of your document. 您的变量page在整个文档范围内都是全局的。 You can access simply by 你可以简单地访问
var myPage = page;
as long as it was set in the document before this script was ran. 只要在运行此脚本之前在文档中设置它。
解决方案2
0 2012-06-11 23:48:10
试试简单：
var page = $("#" + page).val();
解决方案3
0 2012-06-11 23:55:39
A better implementation, not knowing the real purpose, would be using data attributes. 更好的实现，不知道真正的目的，将使用数据属性。
So your html would include <body data-page="1"> (you can add it to any element). 所以你的html将包含<body data-page="1"> （你可以将它添加到任何元素）。
And your JS would do var page = $('body').data('page'); //page = 1 你的JS会做var page = $('body').data('page'); //page = 1 var page = $('body').data('page'); //page = 1
http://html5doctor.com/html5-custom-data-attributes/ http://html5doctor.com/html5-custom-data-attributes/
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