PaulHayesのCSSTransitionsMedia Queryスクリプトを使用していますが、単純なif/elseを実行する方法がわかりません。
これが私が求めていることです:
mql('all and (max-width: 959px)', change);
mql('all and (min-width: 960px)', change);
function change(mql) {
if(max-width: 959px) {
console.log("Do this");
} else {
console.log("Do that");
}
}
これがmql
/paulのスクリプトです:
mql = (function(doc, undefined) {
var docElem = doc.documentElement,
refNode = docElem.firstElementChild || docElem.firstChild,
idCounter = 0;
if(!doc.getElementById('mq-style')) {
style = doc.createElement('style');
style.id = 'mq-style';
style.textContent = '.mq { -webkit-transition: width 0.001ms; -moz-transition: width 0.001ms; -o-transition: width 0.001ms; -ms-transition: width 0.001ms; width: 0; position: absolute; top: -100em; }\n';
docElem.insertBefore(style, refNode);
}
var transitionEnds = Array('transitionend','webkitTransitionEnd','oTransitionEnd','msTransitionEnd');
for(var i in transitionEnds) {
if ('on'+ transitionEnds[i].toLowerCase() in window) transitionEnd = transitionEnds[i];
}
return function(q, cb) {
var id = 'mql-' + idCounter++,
callback = function() {
// perform test and send results to callback
cb({
matches: (div.offsetWidth == 42),
media: q
});
},
div = doc.createElement('div');
div.className = 'mq'; // mq class in CSS declares width: 0 and transition on width of duration 0.001ms
div.id = id;
style.textContent += '@media ' + q + ' { #' + div.id + ' { width: 42px; } }\n';
// add transition event listener
div.addEventListener(transitionEnd, callback, false);
docElem.insertBefore(div, refNode);
// original polyfill removes element, we need to keep element for transitions to continue and events to fire.
return {
matches: div.offsetWidth == 42,
media: q
};
};
})(document);