为雇主制定一个相当直接的项目。我需要一份调查表,提交时会将答案转储到电子表格中。我在独立应用上使用Google Apps脚本。项目管理层决定不使用Google表单。
我遇到的问题是检索单选按钮值。有很多单选按钮问题,我需要能够迭代它们来获取它们的值。
用户界面是通过GAS的UiApp服务完成的:
function doGet(e){
var app = UiApp.createApplication();
// set up the form
var form = app.createFormPanel();
var flow = app.createFlowPanel();
form.add(flow);
app.add(form);
// create the radio button groups (they are all Likert scales).
// I've written a function that creates a single group (see below)
for (var i=0; i<24; i++){
likertScale(i, flow);
};
flow.add(app.createSubmitButton('Submit')
return app;
}
我的likertScale()函数用于创建单选按钮组:
function likertScale(name, flow) {
// the 'name' argument allows me to pass in the var i from the
// for loop above to give each radio button group a unique name
// the 'flow' argument allows me to pass in the var flow that
// I created when setting up the form
var app = UiApp.getActiveApplication();
// create the N/A option, assign the group's name, give the button a label
// and a value
flow.add(app.createRadioButton('item'+name, 'N/A').setFormValue('NA'));
for (var j=1; j<6; j++) {
// create the 5-point Likert scale; assign the group's name to each button,
// use j to give each a label and a value
flow.add(app.createRadioButton('item'+name,j).setFormValue(j);
}
return app;
}
为了测试检索值的前提,我正在添加其文本包含应用程序值的标签。功能的相关部分:
function doPost(e) {
var app = UiApp.getActiveApplication();
for (var i=0; i<24; i++){
var radio = 'item'+i;
// I've previously set the name of each radio button group
// as 'item#', where # is a number 0-23.
app.add(app.createLabel().setText('You selected ' + e.parameter.radio));
// The idea is that each iteration recreates the name of a radio
// button, then uses that name to inform e.parameter.radio
};
return app;
}
对我来说真正令人困惑的是,当上面的代码吐出'你选择未定义'24次时,下面的代码完全有效:
function doPost(e) {
var app = UiApp.getActiveApplication();
app.add(app.createLabel().setText('You selected ' + e.parameter.item0
return app;
}
似乎只要我不尝试任何循环并且我手动编码整个事情,一切都很好。
对此有何见解?
答案 0 :(得分:2)
你不能引用变量&#34; radio&#34;这样,它将被解释为一个名为&#34; radio&#34;尝试:
app.add(app.createLabel().setText('You selected ' + e.parameter[radio]));
在此处查看有关访问对象属性的方法的详细信息: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Working_with_Objects#Objects_and_properties