function type(target) {
const ret = typeof target;
const template = {
'[object Array]': 'array',
'[object Object]': 'object',
'[object Number]': 'number - object',
'[object Boolean]': 'boolean - object',
'[object String]': 'string-object',
};
if (target === null) {
return 'null';
} else if (ret == 'object') {
const str = Object.prototype.toString.call(target);
return template[str];
} else {
return ret;
}
}
type('123'); // string
type(['132']); // array
