Please note, this is a STATIC archive of website developer.mozilla.org from November 2016, cach3.com does not collect or store any user information, there is no "phishing" involved.
This attribute specifies the id of the element with which the label is associated. When the user clicks on the label, the associated element is given focus.
这个属性定义了元素的id，它与label相关联。当用户点击 label 的时候，相关联的元素将获得焦点。