import Vue from 'vue'

const handle = (e, vNode) => {
  let val = e.target.value
  let qualifiedNum = val
    .replace(/[^\d.]/g, '')
    .replace(/^\./g, '')
    .replace(/\.{2,}/g, '.')
    .replace(/^0{2,}/g, '0')
    .replace('.', '$#$')
    .replace(/\./g, '')
    .replace('$#$', '.')
    console.log('qualifiedNum',qualifiedNum)
  vNode.componentInstance.$emit('input', qualifiedNum)
}


Vue.directive('checkNum', {
  bind(el, binding, vNode) {
      console.log('el',binding.arg)
    if (!el.children.length) {
      return
    }
    let index = binding.arg ? binding.arg : 0
    el.children[index].addEventListener('keyup', e => {
      handle(e, vNode)
    })
  },
  unbind(el) {}
})