prototype 屬性使您有能力向?qū)ο筇砑訉傩院头椒ā?/p>
object.prototype.name=value
在本例中,我們將展示如何使用 prototype 屬性來(lái)向?qū)ο筇砑訉傩裕?/p>
<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);
employee.prototype.salary=null;
bill.salary=20000;
document.write(bill.salary);
</script>
輸出:
20000
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