selected.js

来自「这是《JavaScript学习源代码》一书的源代码」· JavaScript 代码 · 共 12 行

// a function to get the selected item in a list
function get_selected()
{

  // a variable to store the selected index number
  var pick = window.document.forms.f.city.selectedIndex;

  // assign the associated value of the selected element
  // to a text field with the id of "txt1"   
  window.document.forms.f.txt1.value = 
	window.document.forms.f.city.options[pick].value; 
}