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873天前var service = function() { |
return { name: 'Service' }; |
} |
var router = function() { |
return { name: 'Router' }; |
} |
var doSomething = function(other) { |
var s = service(); |
var r = router(); |
}; |
var doSomething = injector.resolve('router,,service', function(a, b, c) { |
expect(a().name).to.be('Router'); |
expect(b).to.be('Other'); |
expect(c().name).to.be('Service'); |
}); |
doSomething("Other"); |
带参数 |
var injector ={ |
dependencies: {}, |
register: function(key, value) { |
this.dependencies[key] = value; |
}, |
resolve: function() { |
var func, deps, scope, args = [], self = this; |
if(typeof arguments[0] === 'string') { |
func = arguments[1]; |
deps = arguments[0].replace(/ /g, '').split(','); |
scope = arguments[2] || {}; |
} else { |
func = arguments[0]; |
deps = func.toString().match(/^function\s*[^]*\(\s*([^]*)\)/m)[1].replace(/ /g, '').split(','); |
scope = arguments[1] || {}; |
} |
return function() { |
var a = Array.prototype.slice.call(arguments, 0); |
for(var i=0; i<deps.length; i++) { |
var d = deps[i]; |
args.push(self.dependencies[d] && d != '' ? self.dependencies[d] : a.shift()); |
} |
func.apply(scope || {}, args); |
} |
} |
}; |
injector.resolve(['service,,router', function(service, router) { |
|
}]); |
因为不在需要传递参数，直接可以从作用域中访问到。 |
var injector = { |
dependencies: {}, |
register: function(key, value) { |
this.dependencies[key] = value; |
}, |
resolve: function(deps, func, scope) { |
var args = []; |
scope = scope || {}; |
for(var i=0; i<deps.length, d=deps[i]; i++) { |
if(this.dependencies[d]) { |
scope[d] = this.dependencies[d]; |
} else { |
throw new Error('Can\'t resolve ' + d); |
} |
} |
return function() { |
func.apply(scope || {}, Array.prototype.slice.call(arguments, 0)); |
} |
} |
var doSomething = injector.resolve(['service', 'router'], function(other) { |
expect(this.service().name).to.be('Service'); |
expect(this.router().name).to.be('Router'); |
expect(other).to.be('Other'); |
}); |
doSomething("Other"); |
