count的值永远是0。是因为filter是异步处理的原因吗？

Question

function calcCount(tAry) { var count = 0 var newAry = taskAry.filter(item => item.isVaild == false) count = newAry.length $('#num_td').text(count + 'item left') } function updataTask() { var html = template('taskTpl', { tasks: taskAry }) $('.tdthins').html(html) } var taskAry = [] $.ajax({ type: 'get', url: '/get-task', data: {}, success: function (data) { taskAry = JSON.parse(data) updataTask() calcCount() }

Answer 1

解决问题，而不是换种写法