AngularJS operates key-value objects similar to java's hashmap

Foreword:

We know that the most commonly used hashmap methods in Java are put(...), get(...) and remove() methods, so how to create (use) such an object in angularJS

Thinking Analysis:

We know that in Java, chain access and "[]" can be used to access a certain value of hashmap

Specific implementation:

Chain access:

.factory('ParamsServices', function () {
var params = {};
return {
get: function (key) {
return params.key;
},
put: function (key, object) {
params.key = object;
},
remove: function (key) {
delete params.key;
}
};
})

"[]" access:

.factory('iParamsServices', function () {
var map = {};
return {
get: function (key) {
return map[key];
},
put: function (key, object) {
map[key] = object;
},
remove: function (key) {
delete map[key];
}
};
})

4. Verify

1. Write

ParamsServices.put("itv", "itv");
ParamsServices.put("itv2", "itv2");
iParamsServices.put("itv3", "itv3");
iParamsServices.put("itv4", "itv4");

2. Read

ParamsServices.get("itv") == ParamsServices.get("itv2") // true
iParamsServices.get("itv3") == iParamsServices.get("itv4") // false

5. Summary:

angul as key value object ( hashmap) recommended method Second, realize