constructor 属性返回对创建此对象的数组函数的引用。
object.constructor
在本例中，我们将展示如何使用 constructor 属性：
<script type="text/javascript"> var test=new Array(); if (test.constructor==Array) { document.write("This is an Array"); } if (test.constructor==Boolean) { document.write("This is a Boolean"); } if (test.constructor==Date) { document.write("This is a Date"); } if (test.constructor==String) { document.write("This is a String"); } </script>
输出：
This is an Array
在本例中，我们将展示如何使用 constructor 属性：
<script type="text/javascript">
function employee(name,job,born)
{
this.name=name;
this.job=job;
this.born=born;
}
var bill=new employee("Bill Gates","Engineer",1985);
document.write(bill.constructor);
</script>
输出：
function employee(name, job, born)
{this.name = name; this.job = job; this.born = born;}