Am new to JavaScript,I want to create an object of following structure
var result = {
0: {'key1' : value1,'key2' : value2 },
1: {'key3' : value3, 'key4' : value4 },
}
Someone please help me out.Thanks in advance
3 Answers
Your code is valid as well, but it creates an object. If you want to use an actual array, it could look like this:
var result = [
{'key1' : value1, 'key2' : value2 },
{'key3' : value3, 'key4' : value4 }
];
Note the change from {} to [] for the outer brackets and the drop of the top-level keys.
Edit
To create such an array dynamically, you can use something like this:
var result = []; // init empty array
result.push( {'key1' : value1, 'key2' : value2 } ); // insert a value
for( var i=0; i<10; i++ ) {
result.push( {'key1' : i, 'key2' : i } ); // insert some more values in a loop
}
2 Comments
user2635299
How do i create it dynamically?
Daniel
@user2635299 That is totally dependent on your implementation and data source.
The the object you posted is a JS map object,
var result = {
0: {'key1' : value1,'key2' : value2 },
1: {'key3' : value3, 'key4' : value4 }
}
You can access it like you access an associative array.
result[0][key1]
Or this way
result[0].key1
If you need an array of objects
var result = [
{'key1' : value1,'key2' : value2 },
{'key3' : value3, 'key4' : value4 }
];
You can access it like previous example, and in this case you don't need to declare indexes.
Updated:
For map object creation you can also use a loop like @Sirko posted. The only difference is in the values assignation that could be done in this two ways:
var result = {};
result[0] = {'key1' : value1,'key2' : value2 };
result.myOtherObj = {'key1' : value1,'key2' : value2 };
The map contents are the same as
var result = {
0: {'key1' : value1,'key2' : value2 },
myOtherObj: {'key1' : value1,'key2' : value2 }
};
4 Comments
user2635299
Thanks for the additional info
user2635299
@jimva Can you tell how to create JS map object dynamically as well?
jmventar
The creation of the object could be just as Sirko posted with a loop, the only difference is on the object assignation. I'm gonna edit the answer
user2635299
@jimva Well explained.Thanks again
If you could want to create dinamically it could be a solution:
var final_result = Array();
var element_1 = {"key1" : 2,"key2" : 3};
var element_2 = {"key3" : 2,"key4" : 3};
final_result.push(element_1);
final_result.push(element_2);
Var. Javascript is a case sensitive language.