jQuery .change() get :selected 文本值
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.change() get :selected text value
提问by ngplayground
I'm trying to run the following code
我正在尝试运行以下代码
$("select#shipping_rates_drop").change(function(){
var selectedText = $(this + "option:selected").text();
var ship = thisvalue.split("￡");
var subtotal = $("ul#deliveryList").attr("class");
var ship = ship[1];
var totalcost = parseFloat(subtotal)+parseFloat(ship);
$(".wrap.form-section h1 span").html(" <small>Total </small> ￡"+totalcost);
$("input[name=itemamt]").val(subtotal);
$("input[name=shippingamt]").val(ship);
checklistCheck1();
});
I want to get the text from the selected value on change. ex. UPS Worldwide Express - ￡89.57 then the code splits the value to get me the actual number of cost.
我想在更改时从选定的值中获取文本。前任。UPS Worldwide Express - ￡89.57 然后代码拆分价值以获得我的实际成本数量。
But console.log throws up the following
但是 console.log 抛出以下内容
Error: Syntax error, unrecognized expression: [object HTMLSelectElement]option:selected
错误：语法错误，无法识别的表达式：[object HTMLSelectElement]option:selected
in jquery.min.js (line 2)
在 jquery.min.js（第 2 行）中
So im assuming I've done something wrong here and hoping someone could help out
所以我假设我在这里做错了什么，希望有人能帮忙
回答by Loken Makwana
the line should be
这条线应该是
var selectedText = $(this).find("option:selected").text();
回答by psynnott
Change
改变
var thisvalue = $(this + "option:selected").text();
to
到
var thisvalue = $("select#shipping_rates_drop option:selected").text();
回答by Hasib Kamal
Selected text value :
选定的文本值：
$('#selectBoxId').on('change',function(){
var optionsText = this.options[this.selectedIndex].text;
alert(optionsText);
});
回答by J.Mas
<select onchange="changeSelect($event)">
<option [value]="valor">Texto</option>
</select>
changeSelect(e: any) {
var indexSel = e.target.selectedIndex;
var label = e.srcElement[indexSel].label;console.log(label);
}
