vue框架下

this.AllAuthorityOptions=["11","22","33","44","55","管理"];

this.checkedAuthority=["11","33","管理"]
用数组this.checked[index]值记录判断结果,相等true,不等false;,如下设置默认false:
for(let item of this.AllAuthorityOptions) {
  this.checked.push(false);//设置默认false
}
 
判断两个数组的相同项:
方法1用indexof:
for(var i=0;i<this.Options.length;i++){
    if(this.checkedAuthority.indexOf(this.Options[i]) != -1){
        this.checked[i]=true;
    }else{
        this.checked[i]=false;
    }
}
console.log(this.checked+'this.checked111');
 
方法2用vue.map():
this.Options.map((item,index)=>{
  this.checkedAuthority.map((item1,index1)=>{//再判断有相同项的状态为1
    if(item == item1){
      this.checked[index] = true;
    }
  })
})
 
结果:console.log(this.checked);//[true,true,false,false,false,true]
 
如果数组中的元素是对象,方式如下: 

数组1
var arr1 = [
  {id:'1',name:'第一项'},
  {id:'2',name:'‘第二项’'},
  {id:'3',name:'第三项 ' },
];
数组2
var arr2 = [
  {id:'1',name:'第一项'},
  {id:'3',name:'第二项},
]

var arr = arr1.map((item,index)=>{
  item.state = 0;//先设置所有的状态为0
  arr2.map((item1,index1)=>{//再判断有相同项的状态为1
    if(item.name == item1.name){
      item.state = 1;
    }
})
  return item;
})

结果:console.log(arr)可见:[{id:'1',name:'第一项','state':'1'},{id:'1',name:'第一项','state':'0'},{id:'1',name:'第一项','state':'1'}]

 

 

转载于:https://www.cnblogs.com/js0618/p/10566429.html

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