移动端，由页面定位的滚动区域引起光标可以跟页面滑动

var isIPHONE = navigator.userAgent.toUpperCase().indexOf(‘IPHONE‘)!= -1;

// 元素失去焦点隐藏iphone的软键盘

function objBlur(obj,time){
    var that;
//  if(typeof id != ‘string‘) throw new Error(‘objBlur()参数错误‘);
        time = time || 100,
        docTouchend = function(event){
                if(event.target!= obj){
                    setTimeout(function(){
                        if (typeof($(event.target).attr("readonly"))!=="undefined") {
                            obj[that].blur();
                            document.removeEventListener(‘touchend‘, docTouchend,false);
                            return false;
                        }
                    },time);
                }
        };
        if(obj){
            for (var i = 0; i<obj.length; i++) {
                obj[i].index = i;
                obj[i].addEventListener(‘focus‘, function(){
                    that = this.index;
                    document.addEventListener(‘touchend‘, docTouchend,false);
                },false);
            }
        }else{
            throw new Error(‘objBlur()没有找到元素‘);
        }
}

$(function () {
    if(isIPHONE){
        var obj = document.getElementsByTagName(‘input‘);
        //var objTextarea = document.getElementsByTagName(‘textarea‘);
        var input = new objBlur(obj);
        //var textarea = new objBlur(objTextarea);
        input=null;
        //textarea = null;
    }
})