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。