对jquery中的所有输入元素求和 [英] sum all input elements in jquery

问题描述

试图弄清楚如何编写一个jquery公式，该公式将求和所有在keyup上以"pull"开头的输入字段...我正在尝试下面的代码，但没有任何反应...没有错误，也没有更新要么...(HTML位于最底部)

Trying to figure out how to write a jquery formula that will sum all input fields that begin with "pull" on keyup... I'm trying the code below, but nothing happens... No errors, and no updates either.... (the html is at the very bottom)

$(document).ready(function(){
    /* sums pull total input fields */
    $("input[name^='pull']").bind("keyup", "calcPullTotal");
    calcPullTotal();
});


function calcPullTotal() {
    $("[id=totalpull]").calc(
        "pullnum + 0", { pullnum: $("input[name^=pull]") },
        function (s){
            return s.toFixed(0);
        },
        function ($this) {
            var sum = $this.sum();
                $("#totalpull").text(
                sum.toFixed(0)
            );
        }
    );  
}
<table id="convert">
<tbody>
<tr><td><input type="text" value="" name="pull0" /></td></tr>
<tr><td><input type="text" value="" name="pull1" /></td></tr>
<tr><td><input type="text" value="" name="pull2" /></td></tr>
<tr><td><input type="text" value="" name="pull3" /></td></tr>
</tbody>

<tfoot><tr><td><input type="text" id="totalpull" name="totalpull" value="" /></td></tr></tfoot>
</table>

推荐答案

尝试:

$("input[name^='pull']").bind("keyup", calcPullTotal);
calcPullTotal();

您正在将字符串"calcPullTotal"作为第二个参数传递给 bind 需要一个function.

You were passing the string "calcPullTotal" as the second argument to bind, which expects a function.

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