检测浏览器大小并对每个分辨率应用css [英] detect browser size and apply css for every resolution

问题描述

我有这个函数，我使用来应用一些CSS的菜单，当浏览器调整大小或当菜单渲染在不同的分辨率。
我的问题是这，为什么浏览器不能正确解释我的函数？因为当我调整浏览器在完全模式从半模式浏览器解释只有'800-1024'分辨率，但如果我做 ctrl + f5 在浏览器（清除所有）解释正确我的决议，所以在我的功能是什么错误？

I have this function that I use to apply some css to a menu when browser is resized or when the menu is rendering on different resolutions. My problem is this, why the browser is not interpreting correctly my function? because when I resize my browser in full mode from half mode the browser interprets only '800-1024' resolution but if I do ctrl+f5 in browser (clear all) interprets correctly my resolution so what is wrong in my function?

function renderMenuCorection(){
                if ($('#containerHeader').exists()) {
                    var resizeObject = {

                        '0-640': '9px,2px,-3px,12px',
                        '640-800': '10px,2px,-5px,12px',
                        '800-1024': '10px,8px,-8px,15px',
                        '1024-1300': '12px,12px,-13px,11px',
                        '1300-2000': ',20px,-21px'
                    }

                    var win = $(window);
                    var win_width = win.width();

                    if (win_width > 0 && win_width <= 640) {
                        var value = getValueByKey(resizeObject, '0-640');
                        modifayMenu(value);
                    }
                    else 
                        if (win_width > 640 && win_width <= 800) {
                            var value = getValueByKey(resizeObject, '640-800');
                            modifayMenu(value);
                        }
                        else 
                            if (win_width > 800 && win_width <= 1024) {
                                var value = getValueByKey(resizeObject, '800-1024');
                                modifayMenu(value);
                                alert("I'm on: 800-1024 ," + win_width);
                            }
                            else 
                                if (win_width > 1024 && win_width <= 1300) {
                                    var value = getValueByKey(resizeObject, '1024-1300');
                                    modifayMenu(value);
                                    alert("I'm on: 1024-1300 ," + win_width);
                                }

                                else 
                                    if (win_width > 1300 ) {
                                       var value = getValueByKey(resizeObject, '1300-2000');
                                        modifayMenu(value);
                                    }
                }
            }
          function modifayMenu(value){
            var vals = value.split(',')
                $('#containerHeader').find('.roundMenuLi').each(function(index, item){
                    $(item).find('a').css('font-size', vals[0]);
                    $(item).css('padding-right', vals[1]);
                    $(item).css('padding-left', vals[1]);
                    $(item).find('#secondUl').css('margin-left', vals[2]);
                    $(item).css('padding-bottom', vals[3]);
              });

            }
          function getValueByKey(obj, myKey){

                $.each(obj, function(key, value){

                    if (key == myKey) {
                        returnValue = value;
                    }
                });
                return returnValue;
            }

谢谢！

推荐答案

使用CSS3及其媒体查询。示例：

Use CSS3 and its media queries. Example:

@media (max-width: 500px) {
    /* some CSS for small resolution */
}

@media (min-width: 1000px) {
    /* some CSS for large resolution */
}

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