All examples of adding new elements to associative arrays are going the "easy" way and just have a one dimensional array - my problem of understanding is having arrays within arrays (or is it objects in arrays?).
I have the following array:
var test = [
{
value: "FirstVal",
label: "My Label 1"
},
{
value: "SecondVal",
label: "My Label 2"
}
];
Two questions: How to generate this array of associative arrays (yes... object) from scratch ? How to add a new element to an existing array?
Thanks for helping me understand javascript.
I'm not exactly sure what you mean by "from scratch", but this would work:
var test = []; // new array
test.push({
value: "FirstVal",
label: "My Label 1"
}); // add a new object
test.push({
value: "SecondVal",
label: "My Label 2"
}); // add a new object
Though the syntax you posted is a perfectly valid way of creating it "from scratch".
And adding a new element would work the same way test.push({..something...});
.
This is an array of objects.
You can put more objects in it by calling test.push({ ... })
var items = [{name:"name1", data:"data1"},
{name:"name2", data:"data2"},
{name:"name3", data:"data3"},
{name:"name4", data:"data4"},
{name:"name5", data:"data5"}]
var test = [];
for(var i = 0; i < items.length; i++){
var item = {};
item.label = items[i].name;
item.value = items[i].data;
test.push(item);
}
makes test equal to
[{label:"name1", value:"data1"},
{label:"name2", value:"data2"},
{label:"name3", value:"data3"},
{label:"name4", value:"data4"},
{label:"name5", value:"data5"}]
From scratch, the following lines will create an populate an array with objects, using the Array.prototype.push
method:
var test = []; // Create an array
var obj = {}; // Create an object
obj.value = "FirstVal"; // Add values, etc.
test.push(obj);
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