sessionStorage

for(i=0;i<tkt.length;i++){

                        if(tkt[i].redEnvelopeType==1){

                           full1+="<div class='pic_01' id='fa'>"

                            full1+="<div  class='content'><span class='cash01'><b id='cash'>"+tkt[i].redContent +"</b></span>"

                            full1+="<span class='endline'>有效期至"+tkt[i].expireTime+"</span></div><div class='btn' redEnvelopeActivityId='"+tkt[i].redEnvelopeActivityId+"' >"

                            full1+="<input type='button' class='give' value='发红包'><input type='button' class='use' value='使用'></div></div>"

                            sessionStorage.setItem("carD"+i,tkt[i].redContent);

                            var z=sessionStorage.getItem("carD"+i);

                            console.log(z);

                        };

   在另一个页面调的时候

var rdpcode=sessionStorage.getItem("redcode");

一定要给[key]加引号，不然它会报key is not defined