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分享求救！为什么一个Javascript类声明了3个的对象，分别赋予不同的值，结果却是相同的？
大家帮忙看看下面的代码有什么问题没有？
<html>
<head>
</head>
<script>
<!--
function myObj(){
var _name = "";
function myObj.prototype.setName(name){
_name = name;
}
function myObj.prototype.getName(){
return _name;
}
}
var obj1 = new myObj();
var obj2 = new myObj();
var obj3 = new myObj();
obj1.setName('I am Obj1');
obj2.setName('I am Obj2');
obj3.setName('I am Obj3');
function do1()
{
txt1.value = obj1.getName();
}
function do2()
{
txt2.value = obj2.getName();
}
function do3()
{
txt3.value = obj3.getName();
}
-->
</script>
<body>
<input type="text" name="txt1" value="">
<input type="text" name="txt2" value="">
<input type="text" name="txt3" value="">
<script>
do1();
do2();
do3();
</script>
</body>
</html>
<html>
<head>
</head>
<script>
<!--
function myObj(){
var _name = "";
function myObj.prototype.setName(name){
_name = name;
}
function myObj.prototype.getName(){
return _name;
}
}
var obj1 = new myObj();
var obj2 = new myObj();
var obj3 = new myObj();
obj1.setName('I am Obj1');
obj2.setName('I am Obj2');
obj3.setName('I am Obj3');
function do1()
{
txt1.value = obj1.getName();
}
function do2()
{
txt2.value = obj2.getName();
}
function do3()
{
txt3.value = obj3.getName();
}
-->
</script>
<body>
<input type="text" name="txt1" value="">
<input type="text" name="txt2" value="">
<input type="text" name="txt3" value="">
<script>
do1();
do2();
do3();
</script>
</body>
</html>
...全文
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softjedia 2004-07-29
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呵呵，明白了！
感谢： LxcJie(肖冲)，感谢wanghr100(灰豆宝宝.net)，同时很感谢 smallyear(颠狂柳絮) 。
感谢： LxcJie(肖冲)，感谢wanghr100(灰豆宝宝.net)，同时很感谢 smallyear(颠狂柳絮) 。
wanghr100 2004-07-29
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你的这种方法.所有的操作都作用在一个变量_name上.
function myObj(){
var _name = "";
function myObj.prototype.setName(name){
_name = name;
}
function myObj.prototype.getName(){
return _name;
}
}
->
function myObj(){
this._name = "";
function myObj.prototype.setName(name){
this._name = name;
}
function myObj.prototype.getName(){
return this._name;
}
}
function myObj(){
var _name = "";
function myObj.prototype.setName(name){
_name = name;
}
function myObj.prototype.getName(){
return _name;
}
}
->
function myObj(){
this._name = "";
function myObj.prototype.setName(name){
this._name = name;
}
function myObj.prototype.getName(){
return this._name;
}
}
LxcJie 2004-07-29
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创建对象方法错误，用的是同意个属性，要设置为对象属性，如下：
<html>
<head>
</head>
<script>
<!--
function myObj()
{
this._name = "";
}
function myObj.prototype.setName(name)
{
this._name = name;
}
function myObj.prototype.getName(){
return this._name;
}
var obj1 = new myObj();
var obj2 = new myObj();
var obj3 = new myObj();
obj1.setName('I am Obj1');
obj2.setName('I am Obj2');
obj3.setName('I am Obj3');
function do1()
{
txt1.value = obj1.getName();
}
function do2()
{
txt2.value = obj2.getName();
}
function do3()
{
txt3.value = obj3.getName();
}
-->
</script>
<body>
<input type="text" name="txt1" value="">
<input type="text" name="txt2" value="">
<input type="text" name="txt3" value="">
<script>
do1();
do2();
do3();
</script>
</body>
</html>
<html>
<head>
</head>
<script>
<!--
function myObj()
{
this._name = "";
}
function myObj.prototype.setName(name)
{
this._name = name;
}
function myObj.prototype.getName(){
return this._name;
}
var obj1 = new myObj();
var obj2 = new myObj();
var obj3 = new myObj();
obj1.setName('I am Obj1');
obj2.setName('I am Obj2');
obj3.setName('I am Obj3');
function do1()
{
txt1.value = obj1.getName();
}
function do2()
{
txt2.value = obj2.getName();
}
function do3()
{
txt3.value = obj3.getName();
}
-->
</script>
<body>
<input type="text" name="txt1" value="">
<input type="text" name="txt2" value="">
<input type="text" name="txt3" value="">
<script>
do1();
do2();
do3();
</script>
</body>
</html>
smallyear 2004-07-29
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<script>
<!--
function myObj(){
var _name = "";
function myObj.prototype.setName(name){
_name = name;
}
function myObj.prototype.getName(){
return _name;
}
}
var obj1 = new myObj();
var obj2 = new myObj();
var obj3 = new myObj();
function do1()
{
obj1.setName('I am Obj1');
txt1.value = obj1.getName();
}
function do2()
{obj2.setName('I am Obj2');
txt2.value = obj2.getName();
}
function do3()
{obj3.setName('I am Obj3');
txt3.value = obj3.getName();
}
-->
</script>
<!--
function myObj(){
var _name = "";
function myObj.prototype.setName(name){
_name = name;
}
function myObj.prototype.getName(){
return _name;
}
}
var obj1 = new myObj();
var obj2 = new myObj();
var obj3 = new myObj();
function do1()
{
obj1.setName('I am Obj1');
txt1.value = obj1.getName();
}
function do2()
{obj2.setName('I am Obj2');
txt2.value = obj2.getName();
}
function do3()
{obj3.setName('I am Obj3');
txt3.value = obj3.getName();
}
-->
</script>
