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JavaScript实现为指定对象添加多个事件处理程序的方法,JavaScript获得指定对象大小的方法【足球盘口赔率分析软件】

JavaScript得到钦赐对象大小的措施,javascript对象

本文实例陈诉了JavaScript得到钦赐对象大小的办法。分享给大家供大家参谋。具体如下:

function objectSize(the_object) {
 /* function to validate the existence of each key
 in the object to get the number of valid keys. */
 var object_size = 0;
 for (key in the_object){
  if (the_object.hasOwnProperty(key)) {
   object_size++;
  }
 }
 return object_size;
}

用法如下:

// Arbitrary object
var something = {
 dog: "cat",
 cat: "dog"
}
console.log(objectSize(something));
// Logs: 2

梦想本文所述对大家的javascript程序设计有着扶持。

本文实例陈述了JavaScript获得内定对象大小的办法。分享给大家供大家参照他事他说加以调查。具体如下: f...

正文实例陈诉了JavaScript得到内定对象大小的艺术。分享给我们供我们参照他事他说加以考察。具体如下:

JavaScript落到实处为内定对象增多多个事件处理程序的办法,javascript四个

本文实例汇报了JavaScript完毕为内定对象增添八个事件管理程序的章程。分享给大家供我们参谋。具体如下:

即让你希望对象点击的时候还要管理五个工作,能够行使下边包车型客车代码

/* Start of the multihandle Object...*/
function MultiHandle(owner){
 var my_handlers = new Array();
 var my_owner = owner;
 this.append = function(handler){
  my_handlers[my_handlers.length] = handler;
 }
 this.fire = function(evt){
  var i;
  for(i = 0; i < my_handlers.length; i++){
   my_owner.tempspace = my_handlers[i];
   my_owner.tempspace(evt);
  }
 }
}
/* End of the multihandle object*/
/* start of the object add event handler script */

/*This bit goes where you'd normally write...
... object.onmouseup = [event handler]...
... where [event handler] is an existing function ...
... that handles an event, or even an
... anonymous function.*/
if(typeof(MultiHandle) != "undefined"){
 var mup_handler = object.mh_onmouseup;
 if(!mup_handler){
  mup_handler = new MultiHandle(object);
  object.mh_onmouseup = mup_handler;
  object.onmouseup = function(evt){
  this.mh_onmouseup.fire(evt);
  };
 }
 mup_handler.append([event handler]);
}else{
 object.onmouseup = [event handler];
}

但愿本文所述对我们的javascript程序设计有所帮忙。

本文实例汇报了JavaScript达成为钦点对象增添五个事件管理程序的不二等秘书籍。...

function objectSize { /* function to validate the existence of each key in the object to get the number of valid keys. */ var object_size = 0; for { if (the_object.hasOwnProperty { object_size++; } } return object_size;}

// Arbitrary objectvar something = { dog: "cat", cat: "dog"}console.log);// Logs: 2

瞩望本文所述对大家的javascript程序设计具有利于。

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