Making all the keys value in an array of objects blank

How to make all the key's value in an object replace with blank values...

var array = [{key1:'value',key2:'value2'},{'key1:'value',key2:'value2}]

for (item in arrayO开发者_Go百科bj) {
    arrayObj[item] = ' ';    
}

Is the above code right...

---

for (var i = 0; i< array.length; i++)
  for (var item in array[i]) {
    array[i][item] = ' ';    
  }

---

var array = [{key1:'value',key2:'value2'},{key1:'value',key2:'value2'}]

for(var i = 0, size = array.length; i < size; i++){
    for(var key in array[i]){
        array[i][key] = ' ';
    }
}

---

for(var i=0;i<array.length;i++){
    document.write("<b>array["+i+"] is </b>=>"+array[i]+"<br>");
}

That's probably the best answer for this question =D