The selector would be label[for=email] , so in CSS: label[for=email] { /* ...definitions here... */ } ...or in JavaScript using the DOM: ... <看更多>

CSS3 新增了:checked的偽元素，它可以判斷目前的checkbox 及radio 是否有被選核，這樣html就能夠做出基本的點擊功能；並且結合label標籤，label標籤 ... ... <看更多>

CSS Selectors to Match label Elements ... If you want to make the label react to the state of its associated control, you need to rely on JavaScript to generate ... ... <看更多>

... to create a nice looking login form in which the labels slide up when you focus on the input fields. We will ... ... <看更多>

Here is a solution in SLD but I think you should be able to generate the same in CSS. enter image description here. ... <看更多>