真正好用的Easyui form表单设置只读

function disableForm(formId) {  
    var formBean = $('#' + formId).form().context[formId];
    var formSize = formBean.length;
    for (var i = 0; i < formSize; i++) {
        if ('attributes' in formBean[i]) {
            if ('id' in formBean[i].attributes && 'class' in formBean[i].attributes) {
                var className = formBean[i].attributes.class.nodeValue;
                var id = formBean[i].attributes.id.nodeValue;
                if (className.indexOf("combobox") != -1) {
                    $('#' + id).combobox('readonly',true); 
                } else if (className.indexOf("datebox") != -1){
                    $('#' + id).datebox('readonly',true); 
                } else if (className.indexOf("textbox") != -1){
                    $('#' + id).textbox('readonly',true); 
                }
            }
        }
    }
}