本文实例讲述了JavaScript获得指定对象大小的方法。分享给大家供大家参考。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

希望本文所述对大家的javascript程序设计有所帮助。