var calculateBonus = function( performanceLevel, salary ){
if ( performanceLevel === 'S' ){
return salary * 4;
}
if ( performanceLevel === 'A' ){
return salary * 3;
}
if ( performanceLevel === 'B' ){
return salary * 2;
}
};
calculateBonus( 'B', 20000 ); // 输出:40000
calculateBonus( 'S', 6000 ); // 输出:24000
var performanceS = function( salary ){
return salary * 4;
};
var performanceA = function( salary ){
return salary * 3;
};
var performanceB = function( salary ){
return salary * 2;
};
var calculateBonus = function( performanceLevel, salary ){
if ( performanceLevel === 'S' ){
return performanceS( salary );
}
if ( performanceLevel === 'A' ){
return performanceA( salary );
}
if ( performanceLevel === 'B' ){
return performanceB( salary );
}
};
calculateBonus( 'A' , 10000 ); // 输出:30000
var performanceS = function(){};
performanceS.prototype.calculate = function( salary ){
return salary * 4;
};
var performanceA = function(){};
performanceA.prototype.calculate = function( salary ){
return salary * 3;
};
var performanceB = function(){};
performanceB.prototype.calculate = function( salary ){
return salary * 2;
};
var Bonus = function(){
this.salary = null; //原始工资
this.strategy = null; //绩效等级对应的策略对象
};
Bonus.prototype.setSalary = function( salary ){
this.salary = salary; //设置员工的原始工资
};
Bonus.prototype.setStrategy = function( strategy ){
this.strategy = strategy; //设置员工绩效等级对应的策略对象
};
Bonus.prototype.getBonus = function(){ //取得奖金数额
return this.strategy.calculate( this.salary ); //把计算奖金的操作委托给对应的策略对象
};
var bonus = new Bonus(); bonus.setSalary( 10000 ); bonus.setStrategy( new performanceS() ); //设置策略对象 console.log( bonus.getBonus() ); // 输出:40000 bonus.setStrategy( new performanceA() ); //设置策略对象 console.log( bonus.getBonus() ); // 输出:30000
var strategies = {
"S": function( salary ){
return salary * 4;
},
"A": function( salary ){
return salary * 3;
},
"B": function( salary ){
return salary * 2;
}
};
var strategies = {
"S": function( salary ){
return salary * 4;
},
"A": function( salary ){
return salary * 3;
},
"B": function( salary ){
return salary * 2;
}
};
var calculateBonus = function( level, salary ){
return strategies[ level ]( salary );
};
console.log( calculateBonus( 'S', 20000 ) ); // 输出: 80000
console.log( calculateBonus( 'A', 10000 ) ); // 输出: 30000
$( div ).animate( {"left: 200px"}, 1000, 'linear' );
//匀速运动
$( div ).animate( {"left: 200px"}, 1000, 'cubic' );
//三次方的缓动
nameInput.addValidata({
notNull: true,
dirtyWords: true,
maxLength: 30
})
而notNull,maxLength等方法只需要统一的返回true或者false,来表示是否通过了验证。
validataList = {
notNull: function( value ){
return value !== '';
},
maxLength: function( value, maxLen ){
return value.length() > maxLen;
}
}
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