Truffle Pet Shop understanding App.js code
I'm looking at the following code (link):
App = {
web3Proverder: null,
contracts: {},
...
initContracts: function(){
$.getJSON('Greeter.json', function(data) {
var GreeterArtifact = data;
App.contracts.Greeter = TruffleContract(GreeterArtifact)
App.contracts.Greeter.setProvider(App.web3Provider)
});
},
...
}
It seems contracts
starts as an empty object, and then App.contracts.Greeter
is set equal to something. How is it that the contracts
object has a Greeter
attribute if Greeter
is not defined anywhere in app.js
.
Can somehow help explain this so I can better understand the code?
javascript
add a comment |
I'm looking at the following code (link):
App = {
web3Proverder: null,
contracts: {},
...
initContracts: function(){
$.getJSON('Greeter.json', function(data) {
var GreeterArtifact = data;
App.contracts.Greeter = TruffleContract(GreeterArtifact)
App.contracts.Greeter.setProvider(App.web3Provider)
});
},
...
}
It seems contracts
starts as an empty object, and then App.contracts.Greeter
is set equal to something. How is it that the contracts
object has a Greeter
attribute if Greeter
is not defined anywhere in app.js
.
Can somehow help explain this so I can better understand the code?
javascript
add a comment |
I'm looking at the following code (link):
App = {
web3Proverder: null,
contracts: {},
...
initContracts: function(){
$.getJSON('Greeter.json', function(data) {
var GreeterArtifact = data;
App.contracts.Greeter = TruffleContract(GreeterArtifact)
App.contracts.Greeter.setProvider(App.web3Provider)
});
},
...
}
It seems contracts
starts as an empty object, and then App.contracts.Greeter
is set equal to something. How is it that the contracts
object has a Greeter
attribute if Greeter
is not defined anywhere in app.js
.
Can somehow help explain this so I can better understand the code?
javascript
I'm looking at the following code (link):
App = {
web3Proverder: null,
contracts: {},
...
initContracts: function(){
$.getJSON('Greeter.json', function(data) {
var GreeterArtifact = data;
App.contracts.Greeter = TruffleContract(GreeterArtifact)
App.contracts.Greeter.setProvider(App.web3Provider)
});
},
...
}
It seems contracts
starts as an empty object, and then App.contracts.Greeter
is set equal to something. How is it that the contracts
object has a Greeter
attribute if Greeter
is not defined anywhere in app.js
.
Can somehow help explain this so I can better understand the code?
javascript
javascript
edited Jan 3 at 5:24
Ben Beck
1,9381616
1,9381616
asked Jan 3 at 0:17
James MitchellJames Mitchell
80931434
80931434
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Attributes can be dynamically added to objects in Javascript. So there is no need to define Greeter
before setting it.
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Attributes can be dynamically added to objects in Javascript. So there is no need to define Greeter
before setting it.
add a comment |
Attributes can be dynamically added to objects in Javascript. So there is no need to define Greeter
before setting it.
add a comment |
Attributes can be dynamically added to objects in Javascript. So there is no need to define Greeter
before setting it.
Attributes can be dynamically added to objects in Javascript. So there is no need to define Greeter
before setting it.
answered Jan 3 at 0:35
jonnorjonnor
724410
724410
add a comment |
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