2

.inArray()用来检查我的数组是否有“0”值,然后return false;如果有零则破坏函数。

这是我目前正在使用的代码:

$(document).ready(function() {

    $('#calc').click(function(e) {

        var drop = $(".drop"),
            c = [],
            g = [];

        //Push values into an array.
        drop.each(function() {
            var $t = $(this),
                cals = $t.val(),
                option = $(':selected', this),
                gly = parseFloat(option.attr('rel'));
            g.push(gly * 2);
            c.push(cals * 2);
        });

        var inthere = jQuery.inArray('0', c) > -1;

        //don't calculate if array is empty
        if (c.length === 0) {
            return false;
        }
        //don't calculate with a '0' value in array
        if (inthere == true) {
            return false;
        }

        //shouldn't display if you haven't added a dropdown OR if the dropdown stayed on the "Default" option
        alert('Passed');
    });

    $('#add').click(function() {
        $('#contain').append('<select class="drop"><option value="" rel="" data-default="true">Default</option><option value="1" rel="2">Option 1</option><option value="3" rel="4">Option 2</option></select>');
    });

});​

当用户离开option“默认”选项时,传递给的值c应该是 0。出于某种原因,代码将通过,除非我没有在下拉列表中添加...

如果数组中有“0”,如何防止代码继续执行c???

这是小提琴

4

1 回答 1

2

该数组没有字符串匹配'0',它有一个数字匹配0

http://jsfiddle.net/DUs8e/1/

var inthere = jQuery.inArray(0, c) > -1;
于 2012-10-09T15:38:17.013 回答