我有一个简单的部分，用户可以在其中使用表单添加电影详细信息。我正在接受用户输入的值，并根据它们创建一个对象，然后将其推入数组。但是，我还想为每部添加的电影添加一个动态ID。
$("#btnAddMovie").click(function(e) {
console.log('btn-movie triggered');
var jsonData = [];
var formData = $("#movieForm").serializeArray();
$.each(formData, function() {
console.log(formData);
jsonData.push({
title: formData[0].value,
movieurl: formData[1].value,
movieid: '1'
});
});
console.log(jsonData);
var params = JSON.stringify({
movies: jsonData
});
$.ajax({
type: 'POST',
data: {
params: params
},
url: 'save_to_json.php',
success: function(data) {
$('#msg').html(data).fadeIn('slow');
$('#msg').delay(2000).fadeOut('slow');
},
error: function() {
$('#error-msg').html(data).fadeIn('slow');
$('#error-msg').delay(2000).fadeOut('slow');
}
});
});
上述解决方案给了我
{
"movies": [{
"title": "fdfdfd",
"movieurl": "http:\/\/meed.audiencevideo.com\/videos",
"movieid": "1"
}, {
"title": "fdfdfd",
"movieurl": "http:\/\/meed.audiencevideo.com\/videos",
"movieid": "1"
}]
}
我希望movieid动态增加，例如movieid: 1，movieid: 2等。要获得我想要的东西，我需要做些什么？
答案 0 :(得分：1)
通过代码，您可以在$.each
....
$.each(formData, function(index) {
console.log(formData);
jsonData.push({
title: formData[0].value,
movieurl: formData[1].value,
movieid: index + 1
});
});
...
要了解回调，请参阅jquery文档https://api.jquery.com/jQuery.each/
或者，您也可以使用jsonData.length
....
$.each(formData, function(index) {
console.log(formData);
jsonData.push({
title: formData[0].value,
movieurl: formData[1].value,
movieid: jsonData.length + 1
});
});
...
答案 1 :(得分：0)
尝试一下：
$.each(formData, function () {
console.log(formData);
jsonData.push({
title: formData[0].value,
movieurl: formData[1].value,
movieid: jsonData.length ? jsonData[jsonData.length - 1].movieid + 1 : 0,
});
});
或
$.each(formData, function () {
console.log(formData);
jsonData.push({
title: formData[0].value,
movieurl: formData[1].value,
movieid: jsonData.length,
});
});
这些只是简单的示例，仅当您不打算从数组中删除项目时才可以使用。
答案 2 :(得分：0)
您可以在回调函数中放置一个参数。参数是（索引，数组），但是您只需要索引。
$.each(formData, function(i) {
console.log(formData);
jsonData.push({
title: formData[0].value,
movieurl: formData[1].value,
movieid: i + 1
});
});
答案 3 :(得分：0)
这里的朋友提供的大多数解决方案的结构都不完善，无法为我的问题提供完美的解决方案。
@Randy Casburn指出了大多数常见问题
这是我发现可以完美工作的解决方案，我认为分享会很好，也许会帮助某个人。
我的json文件看起来像这样
function getNextMovieId() {
var nextmovieid = 0;
for (var a = 0; a < movies.length; a++) {
if( movies[a].movieid>nextmovieid ) {
nextmovieid = movies[a].movieid;
}
}
nextmovieid++;
return nextmovieid;
}
$("#btnAddMovie").click(function(e){
var formData = $("#movieForm").serializeArray();
console.log(formData);
movies.push({
title: formData[0].value,
movieurl: formData[1].value,
movieid: getNextMovieId(),
buttons: []
});
})
这是我的js
java.lang.IllegalArgumentException: Unable to locate adb
at com.android.tools.idea.run.editor.DeployTargetPickerDialog.<init>(DeployTargetPickerDialog.java:144)
at com.android.tools.idea.run.editor.ShowChooserTargetProvider.showPrompt(ShowChooserTargetProvider.java:113)
at com.android.tools.idea.run.AndroidRunConfigurationBase.getDeployTarget(AndroidRunConfigurationBase.java:600)
at com.android.tools.idea.run.AndroidRunConfigurationBase.doGetState(AndroidRunConfigurationBase.java:281)
at com.android.tools.idea.run.AndroidRunConfigurationBase.getState(AndroidRunConfigurationBase.java:241)
at com.intellij.execution.runners.ExecutionEnvironment.getState(ExecutionEnvironment.java:158)
at com.intellij.execution.runners.BaseProgramRunner.execute(BaseProgramRunner.java:55)
at com.intellij.execution.runners.BaseProgramRunner.execute(BaseProgramRunner.java:50)
at com.intellij.execution.ProgramRunnerUtil.executeConfigurationAsync(ProgramRunnerUtil.java:92)
at com.intellij.execution.ProgramRunnerUtil.executeConfiguration(ProgramRunnerUtil.java:41)
at com.intellij.execution.impl.ExecutionManagerImpl.restart(ExecutionManagerImpl.java:93)
at com.intellij.execution.impl.ExecutionManagerImpl.access$300(ExecutionManagerImpl.java:44)
at com.intellij.execution.impl.ExecutionManagerImpl$3.run(ExecutionManagerImpl.java:442)
at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:232)
at com.intellij.util.Alarm$Request.runSafely(Alarm.java:356)
at com.intellij.util.Alarm$Request.run(Alarm.java:343)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at com.intellij.util.concurrency.SchedulingWrapper$MyScheduledFutureTask.run(SchedulingWrapper.java:228)
at com.intellij.openapi.application.TransactionGuardImpl$2.run(TransactionGuardImpl.java:315)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.doRun(LaterInvocator.java:435)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.runNextEvent(LaterInvocator.java:419)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:403)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:762)
at java.awt.EventQueue.access$500(EventQueue.java:98)
at java.awt.EventQueue$3.run(EventQueue.java:715)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:732)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:755)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:704)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:391)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)