html - 如何默认选择一个单选按钮？ [重复](How to select a radio button by default? [duplicate])

Question

This question already has an answer here:

(这个问题在这里已有答案：)

• Assign an initial value to radio button as checked 8 answers

  (将选定的 8个答案 的初始值分配给单选按钮)

I have some radio buttons and I want one of them to be set as selected by default when the page is loaded.

(我有一些单选按钮，我希望在加载页面时默认将其中一个设置为选中状态。)

How can I do that?

(我怎样才能做到这一点？)

<input type="radio" name="imgsel"  value=""  /> 

  ask by jslearner translate from so

Answer 1

XHTML solution:

(XHTML解决方案：)

<input type="radio" name="imgsel" value="" checked="checked" />

Please note, that the actual value of checked attribute does not actually matter;

(请注意， checked属性的实际值实际上并不重要;)

it's just a convention to assign "checked" .

(它只是一个分配"checked"的约定。)

Most importantly, strings like "true" or "false" don't have any special meaning.

(最重要的是，像"true"或"false"这样的字符串没有任何特殊含义。)

If you don't aim for XHTML conformance, you can simplify the code to:

(如果您不瞄准XHTML一致性，则可以将代码简化为：)

<input type="radio" name="imgsel" value="" checked>