如何在select2 JavaScript multiselect中选择所有选项 [英] How to select all options in select2 JavaScript multiselect

问题描述

前几天，我试图弄清楚如何在select2 v3.5.1 JavaScript multiselect控件中选择所有项.我尝试了一些尝试，但是我很难弄清楚该怎么做.我只是想选择框中的每个选项，但是显然select2没有内置选项可以为您选择所有项目.

The other day, I was trying to figure out how to select all items in select2 v3.5.1 JavaScript multiselect control. I tried a few things, but I was having a difficult time figuring out how to do it. I just wanted to select every option in the box, but apparently select2 does not have a built-in option to select all of the items for you.

推荐答案

以下是OP答案的更有效版本:

Here's a slightly more efficient version of the OP's answer:

var selectedItems = [];
var allOptions = $("#IncludeFieldsMulti option");
allOptions.each(function() {
    selectedItems.push( $(this).val() );
});
$("#IncludeFieldsMulti").select2("val", selectedItems);

或者使其更简洁:

var selectedItems = $('#IncludeFieldsMulti option').map(function() { return this.value });
$("#IncludeFieldsMulti").select2("val", selectedItems);

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