While loop value test

Question

I have an array of objects that contains a key value with true or false. These values start as false but switch to true on completion of their work. I was looking to determine when all the values had completed i.e. all switched to true. Is there a deviation(logic below) on a while loop with a test if statement that may solve this.

basicarray = [{"value" : false}, {"value" : false},
              {"value" : false}, {"value" : false},
              {"value" : false}  ];

non working logic

---

totalcount = 0;

while(totalcount < basicarray.length )
{
  for(a=0 ; a < basicarray.length; a++)
  {
    if(basicarray[a].value = true)
    {
      totalcount = totalcount + 1;
    }
  }
}
alert("all true");

Answer 1

Use == in place of = :

if(basicarray[a].value == true)  // Notice the ==
{
   totalcount++;    // this better than totalcount = totalcount + 1
}

Or

if(basicarray[a].value)
{
   totalcount++
}

Answer 2

This will count the array elements at start and then subtract from the counter when an element is true. Once the counter is zero all elements should be true.

  var basicarray = [{"value" : true}, {"value" : true},
                {"value" : true}, {"value" : true},
                {"value" : true}  ];

  var c = basicarray.length;
  for(var i = 0; i < basicarray.length; i++) {
    if(basicarray[i].value) c--;
  }

  if(c == 0) {
    alert('All True');
  } 

Answer 3

You're basically just doing a each from the functional paradigm. The following is equivalent:

var result = true;

for ( var i=0, l=basicarray.length; i<l; i++ ) {
    result = basicarray[i].value;

    // If result is ever false, there's no point in continuing
    if ( !result ) { break; }
}

console.log(result);