- 當this為全域性變數時，this為window物件
<script>
// 在全域性變數中，this為window
window.onload= function(){
alert(window);//object window
}
this.onload= function(){
alert(this);//object window
}
</script>
- 當this在函式中時，this為window物件
<script>
function xiu(kang){
this.sear = kang;
}
xiu("修抗");
alert(sear);
</script>
- 當this在物件中，this就為該物件（person）
<script>
var name = "修抗";
var person = {
name: "user",
xiu: function(){
alert(this.name);
}
}
person.xiu();//user
</script>
- 當this遇上new時，this為新建立的物件（kang）
<script>
function Fun(){
this.name = "修抗";
}
var kang = new Fun();
alert(kang.name); //修抗
</script>
- 當this在內部函式中，this為window
<script>
var name = "修抗";
var person = {
name : "user",
hello : function(){
var sayhello = function() {
alert(this.name);
};
sayhello();
}
}
person.hello();//修抗
</script>
- 當this在內部函式中，如果在物件中將this作為變數儲存下來，this就指向該物件
<script>
var name = "修抗";
var person = {
name : "user",
hello : function(){
var th = this;
var sayhello = function() {
alert(th.name);
};
sayhello();
}
}
person.hello();//user
</script>
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