[#2826] trim values before search (#2844)

* [#2826]trim values before searching

* [#2826]add test

* [#2826]add comment

cypress/integration/trim_values_before_search.spec.js

@@ -0,0 +1,43 @@
+describe('Trim values before search', () => {
+ beforeEach(() => {
+ cy.visit('/tests/index.html');
+ });
+
+ it('Matches even if there are leading and trailing spaces', () => {
+ cy.selectpicker({
+ html: `
+ <select class="selectpicker" data-live-search="true">
+ ${[
+ 'apple',
+ 'pear',
+ 'dragon fruit'
+ ].map((value) =>
+ `<option value="${value}">${value}</option>`
+ ).join('')}}
+ </select>
+ `
+ }).then(($select) => {
+ const button = `[data-id="${$select[0].id}"]`;
+ cy.get(button).click();
+ $select.on('fetched.bs.select', cy.stub().as('fetched'));
+ [{
+ searchValue: ' app ', // leading and trailing spaces
+ expectedContain: 'apple'
+ }, {
+ searchValue: ' 　pea', // both half and full space mixed
+ expectedContain: 'pear'
+ }, {
+ searchValue: ' ', // text with half-space also match
+ expectedContain: 'dragon fruit'
+ }].forEach((test) => {
+ cy.get('input').type(test.searchValue);
+ cy.get('.dropdown-menu').find('li').first().should(($el) => {
+ expect($el).to.have.class('active')
+ expect($el).to.contain(test.expectedContain);
+ });
+ cy.get('.dropdown-menu').find('li').first().click();
+ cy.get(button).contains(test.expectedContain).click();
+ });
+ });
+ });
+});

js/bootstrap-select.js

@@ -3007,6 +3007,11 @@
 
  this.$searchbox.on('input propertychange', function () {
  var searchValue = that.$searchbox[0].value;
+ var isWhitespace = /^\s*$/.test(searchValue);
+ if (!isWhitespace) {
+ // trim leading and trailing half-width spaces and full-width spaces.
+ searchValue = searchValue.replace(/^\s+|\s+$/g, '');
+ }
 
  that.selectpicker.search.elements = [];
  that.selectpicker.search.data = [];