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The jQuery replacement for select boxes
As of
// ==UserScript==
// @name Select2
// @namespace https://select2.github.io/
// @version 0.2
// @description The jQuery replacement for select boxes
// @author t_liang
// @include *:*
// @grant none
// ==/UserScript==
(function() {
var selects = document.getElementsByTagName('select');
if (selects.length) {
var protocol = location.protocol == 'https:' ? 'https:' : 'http:',
jQueryOnload = function() {
jQuery(function($) {
$.getScript(protocol + '//cdn.bootcss.com/select2/4.0.3/js/select2.min.js', function() {
$(document.head).append('<link href="' + protocol + '//cdn.bootcss.com/select2/4.0.3/css/select2.min.css" rel="stylesheet">');
$(selects).filter(':visible').select2();
});
});
},
versionMoreThan = function(version, moreThan) {
// 版本比较: 大于
version = version.split('.');
moreThan = moreThan.split('.');
for (var i = 0, j = Math.max(version.length, moreThan.length); i < j; i++) {
var version_i = i < version.length ? version[i] : 0;
var moreThan_i = i < moreThan.length ? moreThan[i] : 0;
if (version_i > Number(moreThan_i)) {
return true;
} else if (version_i < Number(moreThan_i)) {
return false;
}
}
return false;
};
if (typeof jQuery == 'function') {
if (!versionMoreThan(jQuery.fn.jquery, '1.2.6')) {
jQueryOnload();
return;
}
}
// append jQuery
var jQueryScript = document.createElement('SCRIPT');
jQueryScript.src = protocol + '//cdn.bootcss.com/jquery/3.1.1/jquery.min.js';
jQueryScript.onload = jQueryOnload;
document.head.appendChild(jQueryScript);
}
})();