数字验证问题.0.5不是数字，但0.5是

A number validation issue. .5 is not a number but 0.5 is?

本文关键字：数字 验证 问题      更新时间：2023-09-26

这是得到验证的模型。

public class EstimateItem
{
    public string ItemName { get; set; }
    public string DisplayName { get; set; }
    public string Description { get; set; }
    public string Notes { get; set; }
    [DataType(DataType.Currency)]
    //[DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:n2}")]
    public decimal PerUnitCost { get; set; }
    public string PerUnitDescription { get; set; }
    [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:n0}")]
    [Min(1, ErrorMessage = "Cannot be zero")]
    public int Units { get; set; }
    public string UnitsDescription { get; set; }
    public bool IsEnabled { get; set; }
    public bool IsBasedOnHomeSquareFootage { get; set; }
    [DataType(DataType.Currency)]
    //[DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:c2}")]
    public decimal Cost { get; set; }
    public List<EstimateItemOption> Options { get; set; }
    public decimal ItemTotal { get; set; }
}

这是填充模型的文本框。

@Html.TextBoxFor(m => Model.Categories[c].EstimateGroups[g].EstimateItems[i].PerUnitCost,
new { @disabled = "disabled", @onchange = "costUpdate(this);", @cstType = "perUnit" })

这是调用@onChange

时所处理的javascript
case 'perUnit':
    var it = $(src).closest('.itemRow').find("input[cstType='cost']");
    var gt = parseFloat(et.html().replace('$', '').replace(',', ''));
    et.html(gt - parseFloat(it.val()));
    if ($(src).closest('.itemRow').find('[hs]').attr('hs') == 'True') {
        var nv = $(src).val();
        if (nv == null || nv.length == 0) nv = 0;
        it.val(Math.round(nv * parseFloat($('#SquareFootage').val()) * 100) / 100)
        $(src).closest('.itemRow').find('.hcst').val(it.val());
        et.html(CurrencyFormatted(parseFloat(et.html()) + parseFloat(it.val())));
    } else {
        var nv = $(src).val();
        if (nv == null || nv.length == 0) nv = 0;
        it.val(Math.round(nv * parseFloat($(src).closest('.itemRow').find("input[cstType='units']").val()) * 100) / 100)
        $(src).closest('.itemRow').find('.hcst').val(it.val());
        et.html(CurrencyFormatted(parseFloat(et.html()) + parseFloat(it.val())));
    }
    break;

我需要知道为什么文本框不允许我使用小于1的小数，比如0.5它说perunitcost必须是一个数字

试着强制输入一个数字:

case 'perUnit':
    var input = $(src), // may as well cache this as you're using it six times.
        it = input.closest('.itemRow').find("input[cstType='cost']"),
        gt = parseFloat(et.html().replace('$', '').replace(',', '')),
        nv = parseFloat(input.val(), 10); // parse to a float to ensure a number
    et.html(gt - parseFloat(it.val()));
    if (!nv) { // nv is now either a number, or NaN, so using truthy/falsy to determine if NaN
        nv = 0; // technically, 0 is falsy but this sets it to 0 anyway, so not an issue.
    }
    if (input.closest('.itemRow').find('[hs]').attr('hs') == 'True') {
        it.val(Math.round(nv * parseFloat($('#SquareFootage').val()) * 100) / 100)
        input.closest('.itemRow').find('.hcst').val(it.val());
        et.html(CurrencyFormatted(parseFloat(et.html()) + parseFloat(it.val())));
    } else {
        it.val(Math.round(nv * parseFloat(input.closest('.itemRow').find("input[cstType='units']").val()) * 100) / 100)
        input.closest('.itemRow').find('.hcst').val(it.val());
        et.html(CurrencyFormatted(parseFloat(et.html()) + parseFloat(it.val())));
    }
    break;
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