Question

我需要根据api中的值对array（formarray）的值进行排序。我需要从中订购爱好阵列，

"hobbies": [
    "eat",
    "sleep",
    "drink"
  ]

收件人

"hobbies": [
    "sleep",
    "eat",
    "drink"
  ]

应该按照爱好安排订购，

ArrangedHobbies = [ {'eat': 1, 'sleep': 0, 'drink': 2}]

我需要根据ArrangedHobbies的顺序来排列hobbies数组的值。

我曾尝试使用es map

arrangeHobbyValues() {
   this.SignupForm.get('hobbies').map( x => { // tranform the value with map });
}

在code上可以进行堆叠闪电战

Answer 1

嗯，我按照您尝试的顺序添加了，吃>睡眠>喝

this.SignupForm.get('hobbies').value.sort().reverse();

Answer 2

在模糊控制中调用arrageHobbyValues

<input type="text" class="form-control" (blur)="arrangeHobbyValues()"
            [formControlName]="i">

您的rangingHobbyValues可以像

  arrangeHobbyValues() {
    (this.SignupForm.get('hobbies') as FormArray).controls.sort((a,b)=>{
      let orderA:any=this.ArrangedHobbies[0][a.value] || 9999999;
      let orderB:any=this.ArrangedHobbies[0][b.value] || 9999999;
      return orderB-orderA
    })

但是，奇怪的是您的“ ArrangedHobbies”是对象数组吗？???

//if your arrangeHobies would be like
ArrangedHobbies = [ 'eat','sleep','drink']
//then
arrangeHobbyValues() {
    (this.SignupForm.get('hobbies') as FormArray).controls.sort((a,b)=>{
      let orderA:any=this.ArrangedHobbies.indexOf(a.value);
      let orderB:any=this.ArrangedHobbies.indexOf(b.value);
      if (orderA==-1)
          orderA=99999;
      if (orderB==-1)
          orderB=99999;
      return orderB-orderA
    })

如何在角电抗形式的形式控制中对值进行排序？

2 个答案: