可输入的select

时间： 2021-07-31 作者：daque

<html><head><style></style></head><script><!--function addoption(pos){

if(event.keycode==13) { var select_obj = document.getelementbyid("myselect"); var text_value = document.getelementbyid("test").value;

if (select_obj.length) { for (var i=0;i<select_obj.length;i++) { // 即使仍旧生存，不增添，径直退出 if (select_obj.options[i].text==text_value) alert("选项已生存，请从新输出"); } } var the_option= new option(text_value,text_value); select_obj.add(the_option);

select_obj.selectedindex = select_obj.options.length-1 } }//--></script><div class="cls1" style="clip: rect(3 280 21 110)"> <select name="myselect" style="width:127" onchange="document.getelementbyid('test').value=this.value"> </select></div><div class="cls2"><input type="text" name="test" onkeydown="addoption()" size="20" style="width: 127; height: 23"></div>

</body></html>

可输入的select

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