jQuery 如何在jquery中分配，清除和获取隐藏字段的值？
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How to assign, clear and get value of a hidden field in jquery?
提问by ACP
Consider a hiddenfield in the page HfId
考虑页面中的隐藏字段 HfId
<input type="hidden" id="HfId"/>
How to assign,clear and get value of a hidden field in jquery? ANy suggestion...
如何在jquery中分配，清除和获取隐藏字段的值？任何建议...
回答by Bobby
The Element Selectorof jQuery is exactly designed for this. It allows you to select all elements which fit the given name, id or class:
jQuery的元素选择器正是为此而设计的。它允许您选择适合给定名称、ID 或类的所有元素：
$("a") // Get all a-elements
$("#id") // Get all elements with the id "id"
$(".class") // Get all elements with the class "class"
The visibility or other properties of the element does not interfere with that, as it is still present in the DOM of the document.
元素的可见性或其他属性不会干扰它，因为它仍然存在于文档的 DOM 中。
Fields have the overloaded function val(), val($value)which allows you to get and set the value of the field:
字段具有重载函数val()，val($value)它允许您获取和设置字段的值：
$val = $("#HfId").val(); // Get
$("#HfId").val(""); // Clear
$("#HfId").val($newVal); // Set
回答by svinto
$("#HfId").val("pony");
var x = $("#HfId").val();
