js检测是否手机浏览的函数

function isMobile()
{
    var mobile = navigator.userAgent.match(/iphone|android|phone|mobile|wap|netfront|x11|java|operamobi|operamini|ucweb|windowsce|symbian|symbianos|series|webos|sony|blackberry|dopod|nokia|samsung|palmsource|xda|pieplus|meizu|midp|cldc|motorola|foma|docomo|up.browser|up.link|blazer|helio|hosin|huawei|novarra|coolpad|webos|techfaith|palmsource|alcatel|amoi|ktouch|nexian|ericsson|philips|sagem|wellcom|bunjalloo|maui|smartphone|iemobile|spice|bird|zte-|longcos|pantech|gionee|portalmmm|jig browser|hiptop|benq|haier|^lct|320x320|240x320|176x220/i)!= null;
    return mobile;
}

function isMobile(){
    if(navigator.userAgent.toLowerCase().indexOf(‘mobile‘)<0)return false;
    else return true;
}