input联动计算 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no, minimal-ui">
    <meta name="screen-orientation" content="portrait"/>
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="format-detection" content="telephone=no">
    <meta name="full-screen" content="yes">
    <meta name="x5-fullscreen" content="true">
    <title>input</title>
    <script src="https://cdn.bootcss.com/jquery/3.1.1/jquery.min.js"></script>
<style>

</style>
</head>
<body>

<input type="text" class="enter">
<input type="text" class="enter">
<input type="text" class="enter">
<input type="text" class="enter">
<input type="text" class="total">



<script>
$('.enter').keyup(function(event) {
    var total = 0
    var num = Number($(this).val())
    var val = num === NaN ? 0 : num

    $('.enter').each(function(data){
        if(this == event.target) return
        total += Number($(this).val())    
    })

    $('.total').val(total + val)
})
</script>
</body>
</html>

 

posted @ 2018-02-27 09:26  SharkChilli  阅读(271)  评论(0)    收藏  举报