如何将变量从javascript发送到php并将结果返回给JS [英] How to send variable to php from javascript and return the result back to JS

问题描述

我有这个代码.

var book = document.getElementById('txtBook').value;
switch(book.toUpperCase())
    {
        case "GEN": var bk = "101"; break;
        case "EXO": var bk = "101"; break;
        case "LEV": var bk = "101"; break;
        case "DEU": var bk = "102"; break;
        ... and so on...
    }

我想用数据库查询替换我的switch.由于我从这里搜索中学到了我无法直接从JS完成此操作，因此我需要将其传递给php Variable.

I want to replace my switch with a database query. Since I learn from searching here that I can't do it straight from JS, I need to pass it to php Variable.

我想知道如何将我的var book传递到php页面，例如getbook.php

I want to know how to pass my var book to a php page like for example getbook.php

然后我将在php端进行查询.我希望将结果返回给我的JS进行进一步处理.

I will then make a query on php side. I want that result back to my JS for further processing.

我更喜欢不需要刷新页面的方法.

I prefer method with no page refresh required.

谢谢

推荐答案

您需要使用 ajax .

$.get('getbook.php', {book: $('#txtBook').val()}, function(data) {
  // here you get your data and deal it 
});

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