JQuery扩展方法实现Form表单与Json互相转换

Posted 2022-01-05 fireicesion

1.把表单转换出json对象

 

 //把表单转换出json对象
    $.fn.toJson = function () 
        var self = this,
            json = ,
            push_counters = ,
            patterns = 
                "validate": /^[a-zA-Z][a-zA-Z0-9_]*(?:\[(?:\d*|[a-zA-Z0-9_]+)\])*$/,
                "key": /[a-zA-Z0-9_]+|(?=\[\])/g,
                "push": /^$/,
                "fixed": /^\d+$/,
                "named": /^[a-zA-Z0-9_]+$/
            ;

        this.build = function (base, key, value) 
            base[key] = value;
            return base;
        ;

        this.push_counter = function (key) 
            if (push_counters[key] === undefined) 
                push_counters[key] = 0;
            
            return push_counters[key]++;
        ;

        $.each($(this).serializeArray(), function () 
            // skip invalid keys
            if (!patterns.validate.test(this.name)) 
                return;
            

            var k,
                keys = this.name.match(patterns.key),
                merge = this.value,
                reverse_key = this.name;

            while ((k = keys.pop()) !== undefined) 
                // adjust reverse_key
                reverse_key = reverse_key.replace(new RegExp("\\[" + k + "\\]$"), ‘‘);

                // push
                if (k.match(patterns.push)) 
                    merge = self.build([], self.push_counter(reverse_key), merge);
                

                // fixed
                else if (k.match(patterns.fixed)) 
                    merge = self.build([], k, merge);
                

                // named
                else if (k.match(patterns.named)) 
                    merge = self.build(, k, merge);
                
            

            json = $.extend(true, json, merge);
        );

        return json;
    ;

 

　　

 

 

2.将josn对象赋值给form

 

//将josn对象赋值给form
    $.fn.loadData = function (obj) 
        var key, value, tagName, type, arr;

        this.reset();

        for (var x in obj) 
            if (obj.hasOwnProperty(x)) 
                key = x;
                value = obj[x];

                this.find("[name=‘" + key + "‘],[name=‘" + key + "[]‘]").each(function () 
                    tagName = $(this)[0].tagName.toUpperCase();
                    type = $(this).attr(‘type‘);
                    if (tagName == ‘INPUT‘) 
                        if (type == ‘radio‘) 
                            if ($(this).val() == value) 
                                    $(this).attr(‘checked‘, true);
                            
                         else if (type == ‘checkbox‘) 
                            arr = value.split(‘,‘);
                            for (var i = 0; i < arr.length; i++) 
                                if ($(this).val() == arr[i]) 
                                        $(this).attr(‘checked‘, true);
                                    break;
                                
                            
                         else 
                            $(this).val(value);
                        
                     else if (tagName == ‘SELECT‘ || tagName == ‘TEXTAREA‘) 
                        $(this).val(value);
                    
                );