I currently have a Javascript object that looks like this:
Object {0: 8, 1: 9, 2: 10}
I am trying to get the number of individual items in the object (i.e. 3) but can't figure out how to do so. Since the object isn't an array, I can't just call .length()
. I tried huntsList[2].toString().split('.').length
to split the items at the commas and count them in this way but it returns 1, since it converts the entire object to a single string that looks like this: ["[object Object]"]
.
Any suggestions for how I can accomplish this are appreciated.
The length property is used to get the number of keys present in the object. It gives the length of the object. the length of the object.
To get the number of elements in a JavaScript object, we can use the Object. keys method. const count = Object. keys(obj).
One way to get an estimate of an object's size in Java is to use getObjectSize(Object) method of the Instrumentation interface introduced in Java 5. As we could see in Javadoc documentation, the method provides “implementation-specific approximation” of the specified object's size.
To get the length of an object in TypeScript:Use the Object. keys() method to get an array of the object's keys. Access the length property on the array of keys. The length property will return the number of key-value pairs in the object.
You could get the keys using Object.keys
, which returns an array of the keys:
Example
var obj = {0: 8, 1: 9, 2: 10};
var keys = Object.keys(obj);
var len = keys.length
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