网上一堆可以回车替换tab的代码,可是基本都忽略谷歌浏览器的兼容性,找了3个小时 试了无数遍,终于总结出这一段代码,希望能帮到需要的同学,也给自己留个备忘

        document.οnkeydοwn=function(evt)

        {

            var isie = (document.all) ? true : false;

            var key;

            var srcobj;

            // if the agent is an IE browser, it's easy to do this.

            if (isie) {

                key = event.keyCode;

                srcobj=event.srcElement;

            }

            else {

                key = evt.which;

                srcobj=evt.target;

            } 

           if(key==13 && srcobj.type!='button' && srcobj.type!='submit' &&srcobj.type!='reset' && srcobj.type!='textarea' && srcobj.type!='') {

                if(isie)

                    event.keyCode=9;

                else {

                    var el=getNextElement(evt.target);

                    if (el.type!='hidden')

                        ;   //nothing to do here.

                    else

                        while(el.type=='hidden')

                            el=getNextElement(el);

                    if(!el)

                        return false;

                    else

                        el.focus();

　　　　　　　//把提交按钮retrun 为false

                    return false;

                }

            }

        }

 

        function getNextElement(field) {

            var form = field.form;

            for(var e = 0; e < form.elements.length; e++) {

                if (field == form.elements[e])

                    break;

            }

            return form.elements[++e % form.elements.length];

        }

 

用了好一段时间才整理出来的,要转载的童鞋记得保留我的链接哦