When appending an in jQuery, how to set selected?

Question

In my code, I empty a <select> element and rebuild it again with available times.

However I am trying to set the <option> to selected if it matches the previously selected time:

if(time == currenttime) {
    console.log("Matched Time "+currenttime);
    $("#time-start").append($("<option></option>").attr("value", time).text(time)).prop("selected","selected");
} else {
    $("#time-start").append($("<option></option>").attr("value", time).text(time));
}

I get the console message Matched Time but the .prop("selected","selected") isn't setting the newly created option to be selected.

How can I set it to be selected?

you are chaining `.prop()` to the `.append()` call, `.append()` returns the original chained jQuery object, not the appended element. So you are actually trying to set "selected" on the ` — Patrick Evans, Jun 13 '17 at 08:40
Append all the options first, then just call `$('#time-start').val(time)` — Rory McCrossan, Jun 13 '17 at 08:44

score 3 · Accepted Answer · answered Jun 13 '17 at 08:36

3

I think your code will get more readable like this (and thus makes it easier to set the selected property at the right place):

let $opt = $("<option></option>").attr("value", time).text(time);
if(time == currenttime) {
    console.log("Matched Time "+currenttime);
    $opt.prop("selected","selected");
}
$("#time-start").append($opt);

answered Jun 13 '17 at 08:36

Sirko

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That works! Just for so i can learn, how is that different from setting it inline as I did above? – Chud37 Jun 13 '17 at 08:42
@Chud37 Have a look at your parenthesis. In your code you set the `selected` property on the `#time-start` element and not on the ` – Sirko Jun 13 '17 at 08:43

score 1 · Answer 2 · answered Jun 13 '17 at 08:35

1

You were close, set selected with option element

var option = $("<option>", {"selected" : time == currenttime, text: time, value: time });
$("#time-start").append(option );

OR, Use .val()

$("#time-start").val(time)

answered Jun 13 '17 at 08:35

Satpal

132,252
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score 1 · Answer 3 · answered Jun 13 '17 at 08:36

1

Change it to following:

$("#time-start").append($("<option></option>").prop("selected",true).attr("value", time).text(time));

answered Jun 13 '17 at 08:36

Jaimin Dave

1,224
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When appending an in jQuery, how to set selected?

3 Answers3