我将多种方法结合在一起,提供了一些更高级的解决方案disabled功能(它跨浏览器工作)。代码如下(ES 2015和CoffeeScript都基于您的偏好)。
这提供了多个防御级别,因此被标记为禁用的锚实际上是这样的。使用这种方法,您可以获得一个不能:点击
选项卡到并按回车
选项卡会将焦点移到下一个可调焦的元素。
它知道是否随后启用了锚点。
如何包括这个CSS,因为它是第一道防线。这假设您使用的选择器是a.disableda.disabled {
pointer-events: none;
cursor: default;}
接下来,在Ready上实例化这个类(使用可选的选择器):new AnchorDisabler()
ES 2015级
npm install -S key.jsimport {Key, Keycodes} from 'key.js'export default class AnchorDisabler {
constructor (config = { selector: 'a.disabled' }) {
this.config = config
$(this.config.selector)
.click((ev) => this.onClick(ev))
.keyup((ev) => this.onKeyup(ev))
.focus((ev) => this.onFocus(ev))
}
isStillDisabled (ev) {
// since disabled can be a class or an attribute, and it can be dynamically removed, always recheck on a watched event
let target = $(ev.target)
if (target.hasClass('disabled') || target.prop('disabled') == 'disabled') {
return true
}
else {
return false
}
}
onFocus (ev) {
// if an attempt is made to focus on a disabled element, just move it along to the next focusable one.
if (!this.isStillDisabled(ev)) {
return
}
let focusables = $(':focusable')
if (!focusables) {
return
}
let current = focusables.index(ev.target)
let next = null
if (focusables.eq(current + 1).length) {
next = focusables.eq(current + 1)
} else {
next = focusables.eq(0)
}
if (next) {
next.focus()
}
}
onClick (ev) {
// disabled could be dynamically removed
if (!this.isStillDisabled(ev)) {
return
}
ev.preventDefault()
return false
}
onKeyup (ev) {
// We are only interested in disabling Enter so get out fast
if (Key.isNot(ev, Keycodes.ENTER)) {
return
}
// disabled could be dynamically removed
if (!this.isStillDisabled(ev)) {
return
}
ev.preventDefault()
return false
}}
咖啡礼宾课:class AnchorDisabler
constructor: (selector = 'a.disabled') ->
$(selector).click(@onClick).keyup(@onKeyup).focus(@onFocus)
isStillDisabled: (ev) =>
### since disabled can be a class or an attribute, and it can be dynamically removed, always recheck on a watched event ###
target = $(ev.target)
return true if target.hasClass('disabled')
return true if target.attr('disabled') is 'disabled'
return false
onFocus: (ev) =>
### if an attempt is made to focus on a disabled element, just move it along to the next focusable one. ###
return unless @isStillDisabled(ev)
focusables = $(':focusable')
return unless focusables
current = focusables.index(ev.target)
next = (if focusables.eq(current + 1).length then focusables.eq(current + 1) else focusables.eq(0))
next.focus() if next
onClick: (ev) =>
# disabled could be dynamically removed
return unless @isStillDisabled(ev)
ev.preventDefault()
return false
onKeyup: (ev) =>
# 13 is the js key code for Enter, we are only interested in disabling that so get out fast
code = ev.keyCode or ev.which return unless code is 13
# disabled could be dynamically removed
return unless @isStillDisabled(ev)
ev.preventDefault()
return false