javascript - 如果所有值为 0，则不应提交表单 如果从 3 对中选择一对，然后提交表单

Question

下面是我的 jquery 代码，如果 3 对用户单击复选框并且未在文本框字段中设置最小或最大级别，则不应提交表单。例如，如果选择了 MinLevelA 和 MaxLevelA 值中的任何一个，或者意味着如果选择了任何一对值，则应提交表单。仅验证。

$('#ParLevelSettings').on("click", ".Savebtn", function (event) {  //on click
    var isValid = true;

    $('#ParLevelSettings input.isincludechk:checked, #ParLevelSettings input.ischanged[value="true"]').closest('div.row-fluid').find('.minlvl').each(function () {
        var min = $(this).get(0);
        var max = $(this).closest('div').next('div').find('.maxlvl').get(0)
        var dataVal = $(this).data("ichange");
        var minval = parseInt(min.value);
        var maxval = parseInt(max.value);

        if(minval != 0 && maxval != 0)
        {   
            var isSet = $("#isSet_" + dataVal);
            isSet.val(true);
            return;
        }
            if (isNaN(minval) || minval > maxval) {
                $(min).css({
                    "border": "1px solid red",
                    "background": "#FFCECE"
                });
                $(min).attr('title', 'Min level should not be empty or Min level should be less than the Max level or must give some value to min level');
                isValid = false;
            }
        else {
            $(min).css({
                "border": "",
                "background": ""
            });
        }
        if (isNaN(maxval) || maxval < minval) {
            $(max).css({
                "border": "1px solid red",
                "background": "#FFCECE"
            });

            $(max).attr('title', 'Max level should not be empty or Max level should be greater than the Min level or must give some value to min level');
            isValid = false;
        }
        else {
            $(max).css({
                "border": "",
                "background": ""
            });
        }
    });

    if (isValid == false) event.preventDefault();
});

Answer 1

$("#formID").on("submit", function(){
//use the condition in your example
     if(condition==true){
          return true;
     }
     else{
          //display some reason why the form was not submitted.
          return false;
     }
});