获取contenteditable的内容 对html进行处理 兼容 chrome、IE、Firefox

var html = $(this).html();
if(html){
    var lineSign = html.indexOf('<div>');
    if(html.indexOf('<p>') > -1){
        lineSign = html.indexOf('<p>');
    }
    if(lineSign !== 0){
        if(lineSign > 0){
            html = html.slice(0,lineSign);
        }
        $(this).prepend($('<div></div>',{html:html}));
    }
    data.opt.val = [];
    var h = '',brs = [];
    $(this).children('div,p').each(function(i,n){
        h = n.innerHTML;
        brs = h.split('<br>');
        if(brs.length > 0){
            $.each(brs,function(j,m){
                data.opt.val.push(m.replaceAll('&nbsp;','\t'));
            });
        }else{
            data.opt.val.push(m.replaceAll('&nbsp;','\t'));
        }
    });
}