JavaScript获得指定对象的大小
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
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