jquery this value
The .val() method is primarily used to get the values of form elements such as input , select and textarea . When called on an empty collection, it returns ... ,Your question talks about .val and the "value" of elements, but none of the elements in your question is a form field, and therefore they don't have values.
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 jquery this value 相關參考資料
.text() | jQuery API Documentation
To get the value of a script element, use the .html() method. As of jQuery 1.4, the .text() method returns the value of text and CDATA nodes as well as element ... http://api.jquery.com .val() | jQuery API Documentation
The .val() method is primarily used to get the values of form elements such as input , select and textarea . When called on an empty collection, it returns ... http://api.jquery.com jQuery element value = $(this).value - Stack Overflow
Your question talks about .val and the "value" of elements, but none of the elements in your question is a form field, and therefore they don't have values. https://stackoverflow.com jquery function val() is not equivalent to "$(this).value ...
With $(this).value = '' you're assigning an empty string as the value property of the jQuery object that wraps this -- not the value of this itself. https://stackoverflow.com jQuery text(), html() - Tryit Editor v3.6
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.0/jquery.min.js"></script> ... <p>Input field: <input type="text" id="test3" value=&quo... https://www.w3schools.com jQuery val() Method - W3Schools
https://www.w3schools.com jQuery val() 方法| 菜鸟教程
定义和用法. val() 方法返回或设置被选元素的value 属性。 当用于返回值时： 该方法返回第一个匹配元素的value 属性的值。 当用于设置值时： 该方法设置所有匹配 ... http://www.runoob.com jQuery 属性操作- val() 方法 - W3school
定义和用法. val() 方法返回或设置被选元素的值。 元素的值是通过value 属性设置的。该方法大多用于input 元素。 如果该方法未设置参数，则返回被选元素的当前值。 http://www.w3school.com.cn [jQuery] 如何取得select List index 和value 值| 小惡魔- 電腦技術- 工作 ...
上次寫了[jQuery] 表單取值radio checkbox select text 驗證表單，這篇淺顯易懂，在ptt 有人問到如何把select 的value 跟text 值加入到另一個select ... https://blog.wu-boy.com [JS] JQUERY 取值設定值用法| Gary 程式設計紀錄
<input type="text" name="text1" value="text" test="測試用" /> 取值 $('input[name="text1"]').val(); 取自訂屬性 $('input[name="text1"... http://white1027.blogspot.com |