我喜欢在 STATIC HTML 网站上放置两个下拉选择菜单,并根据选择,将结果(联系方式)显示在一个 div 中
这是正在做的事情,但对我来说是错误的
这是javascript
function setOptions(chosen) {
var selbox = document.myform.opttwo;
selbox.options.length = 0;
if (chosen == " ") {
selbox.options[selbox.options.length] = new Option('Please select one of the options above first', ' ');
}
if (chosen == "1") {
selbox.options[selbox.options.length] = new
Option('first choice - option one', 'oneone');
selbox.options[selbox.options.length] = new
Option('first choice - option two', 'onetwo');
}
if (chosen == "2") {
selbox.options[selbox.options.length] = new
Option('second choice - option one', 'twoone');
selbox.options[selbox.options.length] = new
Option('second choice - option two', 'twotwo');
}
if (chosen == "3") {
selbox.options[selbox.options.length] = new
Option('third choice - option one', 'threeone');
selbox.options[selbox.options.length] = new
Option('third choice - option two', 'threetwo');
}
}
这是html
<form name="myform">
<div align="center">
<select name="optone" size="1" onchange="setOptions(document.myform.optone.options [document.myform.optone.selectedIndex].value);">
<option value="0" selected="selected"></option>
<option value="1">First Choice</option>
<option value="2">Second Choice</option>
<option value="3">Third Choice</option>
</select>
<br>
<br>
<select name="opttwo" size="1">
<option value="0" selected="selected">Please select one of thed options above first</option>
<option value="www.google.com" selected="selected">www.google.com</option>
<option value="www.facebook.com" selected="selected">facebook.com</option>
</select>
<input type="button" name="go" value="Value Selected" onclick="window.open(document.myform.opttwo.options[document.myform.opttwo.selectedIndex].value);">
</div>
这就是我喜欢的方式
提前致谢