preventReclick.js文件封装全局指令v-preventReClick；
export default {
install(Vue) {
Vue.directive('preventReClick', {
inserted: function (el, binding) {
el.addEventListener('click', (e) => {
if (!el.disabled) {
el.disabled = true
setTimeout(() => {
el.disabled = false
}, binding.value || 1000)
//binding.value可以自行设置。如果设置了则跟着设置的时间走
//例如：v-preventReClick='500'
} else { // disabled为true时，阻止默认的@click事件
e.preventDefault()
e.stopPropagation()
}
})
}
})
}
}
