php - 如何创建一个下拉菜单，将数组中的数据放入文本字​​段中

Question

我想将此功能添加到我的表单中。当选择下拉菜单中的选项时，我希望它在上面的文本字段中输入相应的信息。

objBMW = {
     "Sedan":"5-series",
     "Convertible":"6-series",
     "Truck":"X5",
     "Coupe":"3-series",
     "Hatchback":"5-series GT"
  };

<form name="form1" action="formhandler">

<input type="text" name="typecar">

<select name="BMWCars"> 
<option value="Sedan">Sedan</option> // when this option is chosen put string "5-series" in textfield above
<option value="Convertible">Convertible</option> // when this option is chosen put string "6-series" in textfield above
<option value="Truck">Truck</option> // when this option is chosen put string "X5" in textfield above
<option value="Coupe">Coupe</option> // when this option is chosen put string "3-series" in textfield above
<option value="Hatchback">Hatchback</option> // when this option is chosen put string "5-series GT" in textfield above
</select>

Answer 1

Javascript:

document.forms.form1.BMWCars.onchange = function(){
    document.forms.form1.typecar.value = objBMW[this.value];
}

http://jsfiddle.net/xZsc7/