javascript 拆分导致“对象不支持此属性或方法”异常
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时间：2020-10-26 05:55:59 来源:igfitidea点击:
Split causes "Object doesn't support this property or method" exception
提问by Luke
call to spliton a variable causes a "Object doesn't support this property or method"exception and I don't know why.
Here's my code:
调用split变量会导致“对象不支持此属性或方法”异常，我不知道为什么。这是我的代码：
function getKontaktPersonen(kontaktSelectBox) {
var kontaktPersonen = [];
var id_and_name = kontaktSelectBox.attr('id');
var id_part = getID_PartFromName(id_and_name);
var textboxname;
var selectboxname;
if (kontaktSelectBox.attr('class') == 'kontaktSelectBox') {
textboxname = "TextBoxKunde" + id_part;
selectboxname = "SelectBoxKontaktPerson" + id_part;
} else if (kontaktSelectBox.attr('class') == 'NewkontaktSelectBox') {
textboxname = "NewTextBoxKunde" + id_part;
selectboxname = "NewSelectBoxKontaktPerson" + id_part;
} else {
return false;
}
var kundeBox = $('#' + textboxname);
var kundeBoxVal = kundeBox.val();
if (kundeBoxVal != '' && kundeBoxVal != null) {
var adr_id = kundeBoxVal.split(';')[1];
//here comes an ajax call
//[...]
}
}
采纳答案by gdoron is supporting Monica
If the selector didn't find any element the valfunction will return undefinedTry this:
如果选择器没有找到任何元素，val函数将返回undefined试试这个：
if (kundeBoxVal) {
var adr_id = kundeBoxVal.split(';')[1];
}
