Javascript²Ù×÷SelectºÍOption
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1.¶¯Ì¬´´½¨select
function createSelect(){
var mySelect = document.createElement("select");
mySelect.id = "mySelect";
document.body.appendChild(mySelect);
}
2.Ìí¼ÓÑ¡Ïîoption
function addOption(){
//¸ù¾Ýid²éÕÒ¶ÔÏó£¬
var obj=document.getElementById('mySelect');
//Ìí¼ÓÒ»¸öÑ¡Ïî
obj.add(new Option("Îı¾","Öµ")); //Õâ¸öÖ»ÄÜÔÚIEÖÐÓÐЧ
obj.options.add(new Option("text","value")); //Õâ¸ö¼æÈÝIEÓëfirefox
}
3.ɾ³ýËùÓÐÑ¡Ïîoption
function removeAll(){
var obj=document.getElementById('mySelect');
obj.options.length=0;
}
4.ɾ³ýÒ»¸öÑ¡Ïîoption
function removeOne(){
var obj=document.getElementById('mySelect');
//index,Ҫɾ³ýÑ¡ÏîµÄÐòºÅ£¬ÕâÀïÈ¡µ±Ç°Ñ¡ÖÐÑ¡ÏîµÄÐòºÅ
var index=obj.selectedIndex;
obj.options.remove(index);
}
5.»ñµÃÑ¡ÏîoptionµÄÖµ
var obj=document.getElementById('mySelect');
var index=obj.selectedIndex; //ÐòºÅ£¬È¡µ±Ç°Ñ¡ÖÐÑ¡ÏîµÄÐòºÅ
var val = obj.options[index].value;
6.»
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