js delay函数如何实现

js delay函数怎么实现

JScript code

            var Person = function(name){                this.name = name;            }            Person.prototype = {                say: function(){                    alert(this.name)                },                delay: function(t){                    t = t || 0;                }            }                        var c = new Person(123);            c.say().delay(1000)

JScript code

 var Person = function(name){    this.name = name;}Person.prototype = {    say: function(){        alert(this.name)        return this    },    delay: function(t){        t = t || 0;        alert(t)    }}var c = new Person(123);c.say().delay(1000)
[解决办法]
JScript code
var objPerson = function(name){    this.name = name;    }objPerson.prototype = {    say: function(){   //立即say        alert(this.name);          },    say:function(delayTime){  //延时delayTime秒say， //如不重载就改名称 delaySay即可        var t = delayTime||0;        var _this=this;        setTimeout(function(){alert(_this.name);},t*1000);    },    /*    delay: function(t){        t = t || 0;    }    */}var c = new objPerson('shenzhenNBA');c.say();  //立即sayc.say(3);  //延时3秒say
[解决办法]
7楼的代码已经可以了，如果楼主一定要保留一个delay函数的话可以这样写：
           var Person = function(name){
               this.name = name;
           }
           Person.prototype = {
               say: function(){
                   alert(this.name)
               },
               delay: function(time,callBack){///callBack为延时时间到时会回调函数
                   setTimeOut(function(){callBack();},time) ;               }
           }
          
           var c = new Person(123);
           c.delay(1000,c.say)///这样将在1000毫秒后执行c.say，也可以传递其他函数来延迟执行





[解决办法]
var Person = function(name){
   this.name = name;
}
Person.prototype = {
   delay: function(t){
     this.t = t || 0;
     return this;
},
   say: function(){
var that = this;
window.setTimeout(function(){
window.setTimeout(function(){
alert(that.name)
},that.t)
},0);

return this;
   }
};

var c = new Person(123);
c.say().delay(1000);
c.delay(1000);.say();
都可以
别的方法没有想到。。。
[解决办法]
JScript code
    var Person = function (name) {        this.name = name;    }    Person.prototype = {        delay: function (t) {            t = t || 0;            if (this.h) {                clearTimeout(this.h);                this.h = null;                this.say(this.w, t);            }            return this;        },        say: function (word, t) {            t = t || 100;            this.w = word;            var name = this.name;            this.h = window.setTimeout(function () {                alert(name + " say: " + word);            }, t);            return this;        }    };    var c = new Person(123);    c.say("i love you").delay(2000);
[解决办法]
JScript code
(function(){/**         * @method proxy(Function fn, Object scope, Array args)         * 创建代理函数，传入一个Function对象，返回该函数的代理函数，并可指定函数内的this 作用域，和函数被调用时的参数         *          * <pre>         * 1、fn - 被代理的函数          * 2、scope - 被代理函数内部this的作用域          * 3、args - 参数数组         * </pre>         *          * @return 代理函数         */        var proxy = function(fn, scope, args) {            arguments.length > 2 && !Fan.isArray(args) && (args = [args]);            return function() {                var ret;                Fan.isFunction(fn) && (ret = fn.apply(scope || this, args || arguments));                return ret;            };        };        /**         * @staticMethod defer(Function fn, int lazyTime, Object scope, Array args)         * 延迟执行函数         *          * <pre>         * 1、fn -  被延迟执行的函数          * 2、lazyTime - 延迟时间         * 3、scope - 延迟函数中的this作用域，可选         * 4、args - 参数数组，可选         * </pre>         *          * @return setTimeout标示         */        var defer = function(fn, lazyTime, scope, args) {            if (Fan.isFunction(fn)) {                var proxyFn = (null != scope || null != args) ? proxy(fn, scope, args) : fn;                return setTimeout(proxyFn, lazyTime);            }        };// 扩展到Function原型上Function.prototype.proxy = proxy;Function.prototype.defer = defer;})(); 
 
[解决办法]
JScript code
Function.prototype.delay = function(delay, bind){    var thiz = this;    return function(){        setTimeout(function(){            thiz.call(bind || window);        }, delay);    };}var obj = {    name:'liu',    say:function(){        alert(this.name);    },    delaySay:function(){        var delayFunc = this.say.delay(1000, this);        delayFunc();    }}obj.delaySay();