我听说过匿名函数的名称有助于调试。
JQuery的:
$( "p" ).on( "click", function clickHndlr() {
/* body...*/
});
节点
var EventEmitter = require('events').EventEmitter,
emitter = new events.EventEmitter();
emitter.on('customEvent', function customEventHndlr (message, status) {
/* body...*/
});
Vanilla JS:
button.addEventListener('keypress', function buttonHndlr() {
/* body...*/
});
但是对象呢?
var starShipChecker = (function() {
var publicAPI = {
checkForWarpDrive : function(starShip){
if(!starShip.hasOwnProperty('warpDrive')) {
starShip.warpDrive = undefined;
console.log('Your star-ship, the ' + starShip.name + ', now has warp-drive!' +
'\n' + 'Use the addWarpDrive method to apply the maximum warp relevant to your ship Class...');
} else {
console.log('Your star-ship, the ' + starShip.name + ', has warp-drive already!' +
'\n' + 'But use the addWarpDriveMaxLevel method to apply the maximum warp relevant to your ship Class...');
}
},
addWarpDriveMaxLevel : function(){}
};
return publicAPI;
})();
你会得到同样的好处吗?或者它是不同的,因为它们是方法?
checkForWarpDrive : function checkWarpDriveLikeYouWereScotty(starShip){ /* body...*/},
addWarpDriveMaxLevel : function addWarpDriveLikeYouWereScotty(){ /* body...*/}
答案 0 :(得分:4)
是。同样的好处(and more)。
但是,引擎/调试器变得越来越智能化,并且将通过它们所属的对象属性的键隐式命名该函数。 ES6甚至要求(检查.name
property)。但是如果你使用ES6,你可能会使用method definition: - )