javascript 如何从列表框项中获取文本？
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时间：2020-10-25 18:40:10 来源:igfitidea点击:
How get the text from a listbox item?
提问by Jarco
When I try to get the text from a Listbox item in javascript it always returns undefined.
当我尝试从 javascript 中的列表框项中获取文本时，它总是返回未定义。
winkeloptie.value = winkels[i][0];
winkeloptie.text = (winkels[i][0]);
alert(winkeloptie.value) ///This returns the value very nicely
alert(winkeloptie.text) //Returns undefined
How can I get the text?
我怎样才能得到文本？
edit: for more info:
编辑：更多信息：
function addWinkels(){
var winkellijst = document.getElementById('winkel');
for (var i = 0;i < winkels.length;i++){
var winkeloptie = document.createElement("Option");
winkeloptie.text = (winkels[i][0]);
winkeloptie.title = (winkels[i][1]);
winkeloptie.value = winkels[i][0];
winkellijst.options.add(winkeloptie);
}
}
回答by Pav
var x=document.getElementById("mySelect").selectedIndex;
var y=document.getElementById("mySelect").options;
alert("Index: " + y[x].index + " is " + y[x].text);
