Hello I was trying to remove objects from object array that I have and then create another new object (I'm using $.map() to create the new object )
to remove this object from object(x) it's object.number has to match one of the number the number in array(y)
this following code works but i only remove the object that has the object.number = 40 DEMO
Code :
var x =[ //this is the object
{name : 'mark' , number : '10' , color:'green'},
{name : 'jeff' , number : '15' , color:'blue'} ,
{name : 'joy' , number : '30' , color:'yellow'},
{name : 'mick' , number : '15' , color:'red'},
{name : 'mick' , number : '40' , color:'black'}] ;
var y =['40','15']; // i need to remove all object.number that match the
// number in this array
var newObject = $.map(x ,function(index, value){
for(i in y){
if(index.number == y[i])
{return null ; }
else{
return index;
}
}
});
console.log(newObject);
the code above only remove the object that has 40 in it's object.number, how can i make this work?
This is what you want:
var newObject = $.map(x ,function(index, value){
for(i in y){
if(index.number == y[i])
return null;
}
return index;
});
console.log(newObject);
and jsFiddle . By the way: I think using for(i in y)
for arrays is not a good practice (arrays may have other properties). You should use standard:
var l = y.length;
for(var i = 0; i < l; i++){
/* the other code */
}
Note the length caching.
Try this code:
var newObject = $.map(x, function(index, value){
return (y.indexOf(index.number) != -1) ? null : index;
});
Try changing your function like below,
var newObject = $.map(x, function(value, index) {
if ($.inArray(value.number, y) == -1) {
return value;
} else {
return null;
}
});
Use following:
var newObject = $.map($.makeArray(x), function(index, value){
return y.indexOf(index.number) != -1 ? null : index;
});
$.makeArray()
is not required, but recommended, if your array can include disordered data.
I've made an update of your fiddle here . Basically you weren't checking each value in the delete array.
var x =[
{name : 'mark' , number : '10' , color:'green'},
{name : 'jeff' , number : '15' , color:'blue'} ,
{name : 'joy' , number : '30' , color:'yellow'},
{name : 'mick' , number : '15' , color:'red'},
{name : 'mick' , number : '40' , color:'black'}] ;
var y =['40','15'];
var newObject = $.map(x ,function(index, value){
var valid = true;
for(var i = 0; i < y.length; i++){
if(index.number == y[i])
valid = false;
}
if(valid)return index;
else return null;
});
console.log(newObject);
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