JsonAsset Class

Extends Asset

Module: cc

Class for JSON file. When the JSON file is loaded, this object is returned. The parsed JSON object can be accessed through the json attribute in it.
If you want to get the original JSON text, you should modify the extname to .txt so that it is loaded as a TextAsset instead of a JsonAsset.

Index

Properties
  • json Object The loaded JSON object.
  • url String cc.Asset.url is deprecated, please use nativeUrl instead
  • _uuid String
  • loaded Boolean Whether the asset is loaded or not.
  • nativeUrl String Returns the url of this asset's native object, if none it will returns an empty string.
  • refCount Number The number of reference
  • _native String Serializable url for native asset.
  • _nativeAsset Object The underlying native asset of this asset if one is available.
  • _name String
  • _objFlags Number
  • name String The name of the object.
  • isValid Boolean Indicates whether the object is not yet destroyed.
Methods
  • toString Returns the asset's url.
  • serialize Provide this method at the request of AssetDB.
  • createNode Create a new node using this asset in the scene....
  • _setRawAsset Set native file name for this asset.
  • addRef Add references of asset
  • decRef Reduce references of asset and it will be auto released when refCount equals 0.
  • destroy Actual object destruction will delayed until before rendering.
  • _destruct Clear all references in the instance.
  • _onPreDestroy Called before the object being destroyed.
  • _serialize The customized serialization for this object.
  • _deserialize Init this object from the custom serialized data.

Details

Properties

json

The loaded JSON object.

meta description
Type Object
Defined in cocos2d/core/assets/CCJsonAsset.js:47
url

cc.Asset.url is deprecated, please use nativeUrl instead

meta description
Type String
Defined in cocos2d/core/asset-manager/deprecated.js:714
Deprecated cc.Asset.url is deprecated, please use cc.Asset.nativeUrl instead
_uuid
meta description
Type String
Defined in cocos2d/core/assets/CCAsset.js:57
loaded

Whether the asset is loaded or not.

meta description
Type Boolean
Defined in cocos2d/core/assets/CCAsset.js:66
nativeUrl

Returns the url of this asset's native object, if none it will returns an empty string.

meta description
Type String
Defined in cocos2d/core/assets/CCAsset.js:81
refCount

The number of reference

meta description
Type Number
Defined in cocos2d/core/assets/CCAsset.js:115
_native

Serializable url for native asset.

meta description
Type String
Defined in cocos2d/core/assets/CCAsset.js:131
_nativeAsset

The underlying native asset of this asset if one is available. This property can be used to access additional details or functionality releated to the asset. This property will be initialized by the loader if _native is available.

meta description
Type Object
Defined in cocos2d/core/assets/CCAsset.js:142
_name
meta description
Type String
Defined in cocos2d/core/platform/CCObject.js:76
_objFlags
meta description
Type Number
Defined in cocos2d/core/platform/CCObject.js:83
name

The name of the object.

meta description
Type String
Defined in cocos2d/core/platform/CCObject.js:240
Examples
obj.name = "New Obj";
isValid

Indicates whether the object is not yet destroyed. (It will not be available after being destroyed)
When an object's destroy is called, it is actually destroyed after the end of this frame. So isValid will return false from the next frame, while isValid in the current frame will still be true. If you want to determine whether the current frame has called destroy, use cc.isValid(obj, true), but this is often caused by a particular logical requirements, which is not normally required.

meta description
Type Boolean
Defined in cocos2d/core/platform/CCObject.js:258
Examples
var node = new cc.Node();
cc.log(node.isValid);    // true
node.destroy();
cc.log(node.isValid);    // true, still valid in this frame
// after a frame...
cc.log(node.isValid);    // false, destroyed in the end of last frame

Methods

toString

Returns the asset's url.

The Asset object overrides the toString() method of the Object object. For Asset objects, the toString() method returns a string representation of the object. JavaScript calls the toString() method automatically when an asset is to be represented as a text value or when a texture is referred to in a string concatenation.

meta description
Returns String
Defined in cocos2d/core/assets/CCAsset.js:212
serialize

Provide this method at the request of AssetDB.

meta description
Returns String
Defined in cocos2d/core/assets/CCAsset.js:232
createNode

Create a new node using this asset in the scene.
If this type of asset dont have its corresponding node type, this method should be null.

meta description
Defined in cocos2d/core/assets/CCAsset.js:246
Parameters
_setRawAsset

Set native file name for this asset.

meta description
Defined in cocos2d/core/assets/CCAsset.js:261
Parameters
addRef

Add references of asset

meta description
Returns Asset
Defined in cocos2d/core/assets/CCAsset.js:283
decRef

Reduce references of asset and it will be auto released when refCount equals 0.

meta description
Returns Asset
Defined in cocos2d/core/assets/CCAsset.js:301
destroy

Destroy this Object, and release all its own references to other objects.
Actual object destruction will delayed until before rendering. From the next frame, this object is not usable anymore. You can use cc.isValid(obj) to check whether the object is destroyed before accessing it.

meta description
Returns Boolean
Defined in cocos2d/core/platform/CCObject.js:293
Examples
obj.destroy();
_destruct

Clear all references in the instance.

NOTE: this method will not clear the getter or setter functions which defined in the instance of CCObject. You can override the _destruct method if you need, for example:

_destruct: function () {
    for (var key in this) {
        if (this.hasOwnProperty(key)) {
            switch (typeof this[key]) {
                case 'string':
                    this[key] = '';
                    break;
                case 'object':
                case 'function':
                    this[key] = null;
                    break;
        }
    }
}
meta description
Defined in cocos2d/core/platform/CCObject.js:427
_onPreDestroy

Called before the object being destroyed.

meta description
Defined in cocos2d/core/platform/CCObject.js:483
_serialize

The customized serialization for this object. (Editor Only)

meta description
Returns object
Defined in cocos2d/core/platform/CCObject.js:511
Parameters
_deserialize

Init this object from the custom serialized data.

meta description
Defined in cocos2d/core/platform/CCObject.js:524
Parameters
  • data Object the serialized json data
  • ctx _Deserializer

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