Question

尝试以下代码，但未获得预期的输出我期望低于输出

[{"label":"one","value":"1","disabled":true},{"label":"two","value":"2","disabled":true},{"label":"three","value":"3","disabled":false},{"label":"four","value":"4","disabled":false},{"label":"five","value":"5","disabled":false},{"label":"six","value":"6","disabled":true}]

// ---

var A1 = [ {label:"one", value:"1"}, {label:"two", value:"2"},  {label:"six", value:"6"}]; 
var A2 = [ {label:"one", value:"1","disabled":false}, {label:"two", value:"2","disabled":false}, {label:"three", value:"3","disabled":false}, {label:"four", value:"4","disabled":false}, {label:"five", value:"5","disabled":false}, {label:"six", value:"6","disabled":false}]; 

   for(let i = 0 ; i <A2.length; i++){
      for(let j = 0; j < A1.length; j++){
        if(A1[j].value == A2[i].value){
          A2[i].disabled = true;
        }
        else{
              A2[i].disabled = false;                            
        }
      } 
   }

   console.log( JSON.stringify( A2 ) );

Answer 1

如果我正确理解您要执行的操作，请执行以下操作：

for(let i = 0 ; i <A2.length; i++){
   A2[i].disabled = false;
   for(let j = 0; j < A1.length; j++){
     if(A1[j].value == A2[i].value){
       A2[i].disabled = true;
       break;
     }
   } 
}

也就是说-从false值开始（没有匹配项），只有找到匹配项时才将其设置为true。（然后break退出内循环，因为不需要继续。）

Answer 2

如果需要的话，这里是一个替代的观点（jQuery选项）。这只是一个主意，因为我相信可以用更优美的方式写出来：）

var A1 = [ {label:"one", value:"1"}, {label:"two", value:"2"},  {label:"six", value:"6"}]; 
var A2 = [ {label:"one", value:"1","disabled":false}, {label:"two", value:"2","disabled":false}, {label:"three", value:"3","disabled":false}, {label:"four", value:"4","disabled":false}, {label:"five", value:"5","disabled":false}, {label:"six", value:"6","disabled":false}]; 

var tempA = new Array();
var resultArray = new Array();
$.each(A1,function(datakey,dataval){
    tempA.push(dataval['label']);
});
$.each(A2,function(datakey,dataval){
if ($.inArray(dataval['label'],tempA)>-1) {
    resultArray.push({'label':dataval['label'],'value':dataval['value'],'disabled':true})}
  else {
    resultArray.push({'label':dataval['label'],'value':dataval['value'],'disabled':false})
  }
});

console.log(resultArray);

for循环中的对象的循环数组在javascript中仅接受最后一个条件

2 个答案: