将后台JSON数据填充Form表单

【转】http://blog.csdn.net/danmo1993/article/details/53216848

$.fn.populateForm = function(data){
    return this.each(function(){
        var formElem, name;
        if(data == null){this.reset(); return; }
        for(var i = 0; i < this.length; i++){  
            formElem = this.elements[i];
            //checkbox的name可能是name[]数组形式
            name = (formElem.type == "checkbox")? formElem.name.replace(/(.+)\[\]$/, "$1") : formElem.name;
            if(data[name] == undefined) continue;
            switch(formElem.type){
                case "checkbox":
                    if(data[name] == ""){
                        formElem.checked = false;
                    }else{
                        //数组查找元素
                        if(data[name].indexOf(formElem.value) > -1){
                            formElem.checked = true;
                        }else{
                            formElem.checked = false;
                        }
                    }
                break;
                case "radio":
                    if(data[name] == ""){
                        formElem.checked = false;
                    }else if(formElem.value == data[name]){
                        formElem.checked = true;
                    }
                break;
                case "button": break;
                default: formElem.value = data[name];
            }
        }
    });
};

调用方式：$(“#formId”).populateForm(data);

说明：fromId是要填充的form表单的i，data是表示接收到json字符串