[py]js前端求和与flask后端求和

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Counter</title>
</head>
<body>
<div>
    <input id="i1" type="text" name="n1"/>
    +
    <input id="i2" type="text" name="n2"/>
    =
    <input id="i3" type="text" name="n3"/>

    <input type="button" value="原生Ajax" onclick="get_sum()">
</div>


<script>
    var i1 = document.getElementById("i1");// 获取三个input
    var i2 = document.getElementById("i2");
    var i3 = document.getElementById("i3");

    function get_sum() {
        var n1 = i1.value; // 获取input里的value
        var n2 = i2.value;
        i3.value = parseInt(n1)+parseInt(n2); //str转int
    }
</script>
</body>
</html>

todo:
这里我想用ajax将两个数字发到后台来求和, 突然发现ajax好像只用它来自动访问url获取过数据.没主动传过数据到后台过呢.

posted @ 2018-02-05 10:13  mmaotai  阅读(263)  评论(0)  编辑  收藏  举报