Javascript note

Created2022-11-21Updated2022-12-21

Array







Index



Length


Assign value


push method


unshift method


pop method


shift method


splice method



1
splice(<start index>,<how many items want to be removed>)

Object

read value from object


another method

1
<object_name>['attribute_name']


or

Note

in this case can only use the 2nd method

assign value


modify value


delete value


object in array




read value

1
<array_name>[index].<object_attribute_name>


Object in object