动画高度/宽度到“自动”

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Chris Coyier on

无法执行 thing.animate({ "height": "auto" });。因此,这是 Darcy Clarke 的方法,允许该方法工作。您实际上克隆了元素,删除了当前影响元素的固定高度,并测量/保存了该值。然后,您将真实元素动画到该值。

jQuery.fn.animateAuto = function(prop, speed, callback){
    var elem, height, width;
    return this.each(function(i, el){
        el = jQuery(el), elem = el.clone().css({"height":"auto","width":"auto"}).appendTo("body");
        height = elem.css("height"),
        width = elem.css("width"),
        elem.remove();
        
        if(prop === "height")
            el.animate({"height":height}, speed, callback);
        else if(prop === "width")
            el.animate({"width":width}, speed, callback);  
        else if(prop === "both")
            el.animate({"width":width,"height":height}, speed, callback);
    });  
}

用法

$(".animateHeight").bind("click", function(e){
    $(".test").animateAuto("height", 1000); 
});

$(".animateWidth").bind("click", function(e){
    $(".test").animateAuto("width", 1000); 
});

$(".animateBoth").bind("click", function(e){
    $(".test").animateAuto("both", 1000); 
});