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/*
with语句:有了 With 语句，在存取对象属性和调用方法时就不用重复指定对象。 格式：
with(对象){ } */ with(document){
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} function Person(id , name){
this.id = id;
this.name = name;
} //创建一个对象
var p = new Person(110,"狗娃"); with(p){
document.write("编号："+ p.id);
document.write("姓名："+ name);
} </script>
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