数组中的指定某一项放置第一位

const arr = []
this.todoLeftList.forEach((item) => {
  arr.push(item.srcSystemCode)
})
const index = arr.indexOf('zldc')
if (index) {
  const first = this.todoLeftList.splice(index, 1)[0]
  this.todoLeftList.unshift(first)
}

 

const arr = []
this.todoLeftList.forEach((item) => {
  arr.push(item.srcSystemCode)
})
const index = arr.indexOf('zldc')
if (index) {
  const first = this.todoLeftList.splice(index, 1)[0]
  this.todoLeftList.unshift(first)
}