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HomeBackend DevelopmentPHP Tutorial 新帖续问:$.ajax()函数对于怎么利用返回值的一些细节有关问题

新帖续问:$.ajax()函数对于如何利用返回值的一些细节问题

引用 33 楼 anyilaoliu 的回复:
你以前是input的边框  现在input都被你替换掉了

有两个解决方案  一是直接把数值插入input的value中

二是还按现在的写  然后给td加边框让其看起来像之前的

给你写的td.html(xxx) 并不是一定要死板的这么写 你td里边有内容 就随之变化
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前面是热心人 anyilaoliu对我前一个问题的指导。随后,我又产生一些问题:(大家别介意,我是新手,我想扎扎实实把问题问清楚,这样此类问题就好办了)

1.在我前面问的问题中,我需要完成页面左边是记录列表,右边为记录的各个字段详细信息(基本上是以一列方框的形势存在),下面有一个save按钮,用来添加记录的。现在我想增加一个按钮,用来删除选中的记录。我的思路是:点击左边某记录,其内容会在右边显现出具体内容,此时点击删除按钮,则可以删除给记录。我在实现过程中遇到的困难是如何记录下给选中的记录的编号,我采用的方法是在$.ajax()指向ajax.php时,在ajax.php文件中采用session的方式记录下编号,然后再在点击删除按钮时启动另外一个文件,读取session,并查找数据库并删除。想的挺美的,程序就是认为session没有赋值。晕死,以前试过做过小东西,session是保留的最后一招,现在不行了。也不知道怎么回事情?

2.针对$.ajax()中所指定的ajax.php,把该文件返回的信息插入的value中,比如 
 
这个应该怎么操作呢?

3.前贴中说到, anyilaoliu说到“给你写的td.html(xxx) 并不是一定要死板的这么写 你td里边有内容 就随之变化”,意思其实是不仅td可以用,像

都可以这样用是么?是不是对于上述类型都是标注class="指定名称"即可呢?

4.还有,$.ajax()函数中采用$(".show_tr").text(..)的形式引用返回信息,但ajax中还有$.post()这个函数时,好像就写成$("#show_6").text(..),这两个.show_6和#show_6是不能混用的吧?我看到另外一个朋友,他就是到处用$.post(),我想知道这两个函数优劣,以及该使用哪个。

我这个恐怕是学习贴,欢迎各位指导啊。
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