callbackNoHell

callback, but no hell !!!

启动

git clone https://github.com/bonjs/callbackNoHell.git
npm install
node app

源码

var callbackNoHell = function(fns) {
	var _promise = arguments.callee;
	
	var sliceProto = Array.prototype.slice;
	
	var params = [function(result) {
		result && _promise.apply(null, [fns].concat(sliceProto.apply(arguments)));
	}].concat(sliceProto.call(arguments, 1));
	
	var fn = fns.shift();
	fn && fn.apply(null, params);
};

调用方式

function f1(f) {
    $.get('data/step1.json', {}, function(d) {
    	if(d.success) {
			console.log('step1成功');
    		f(true, d.step2Id);	// 下个函数请示可能依赖这次的请求结果
    	} else {
    		f(false, 'step1失败');
    	}
    });
}
function f2(f) {
    $.get('data/step2.json', {}, function(d) {
    	if(d.success) {
			console.log('step2成功');
    		f(true, d.step3Id);	// 下个函数请示可能依赖这次的请求结果
    	} else {
    		f(false, 'step2失败');
    	}
    });
}
function f3(f) {
    $.get('data/step3.json', {}, function(d) {
    	if(d.success) {
			console.log('step3成功');
    		f(true, 'step3成功');
    	} else {
    		f(false, 'step3失败');
    	}
    });
}

callbackNoHell([f2, f1, f3]);