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	This tutorial demonstrates how you can create an overview at the end of the survey, listing all questions and answers via [~~http~~://manual.limesurvey.org/ExpressionScript_-_Presentation#Access_to_variables ExpressionScript placeholders].		This tutorial demonstrates how you can create an overview at the end of the survey, listing all questions and answers via [https://manual.limesurvey.org/ExpressionScript_-_Presentation#Access_to_variables ExpressionScript placeholders].
	It also shows how to limit such an overview to answered questions only.		It also shows how to limit such an overview to answered questions only.

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	** set "Always hide this question" field as "On"		** set "Always hide this question" field as "On"
	** type in "Equation" field the expression:		** type in "Equation" field the expression:
	<pre>~~Q2=~~if(Q1.NAOK < 20, "1", if(Q1.NAOK > 20, "3", "2"))}</pre>		<pre>{if(Q1.NAOK < 20, "1", if(Q1.NAOK > 20, "3", "2"))}</pre>

	==Create a summary page using placeholders==		==Create a summary page using placeholders==

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	This tutorial demonstrates how you can create an overview at the end of the survey, listing all questions and answers via [http://manual.limesurvey.org/~~ExpressionScript_Presentation~~#~~Access_to_Variables~~ ExpressionScript placeholders].		This tutorial demonstrates how you can create an overview at the end of the survey, listing all questions and answers via [http://manual.limesurvey.org/ExpressionScript_-_Presentation#Access_to_variables ExpressionScript placeholders].
	It also shows how to limit such an overview to answered questions only.		It also shows how to limit such an overview to answered questions only.

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	This tutorial demonstrates how you can create an overview at the end of the survey, listing all questions and answers via [http://manual.limesurvey.org/~~ExpressionScript~~#Access_to_Variables ExpressionScript placeholders].		This tutorial demonstrates how you can create an overview at the end of the survey, listing all questions and answers via [http://manual.limesurvey.org/ExpressionScript_Presentation#Access_to_Variables ExpressionScript placeholders].
	It also shows how to limit such an overview to answered questions only.		It also shows how to limit such an overview to answered questions only.

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	__TOC__		__TOC__

	{{Note\| '''Please help extending this article''' by adding your own examples. This will help others getting started using the Expression ~~Manager~~.}}		{{Note\| '''Please help extending this article''' by adding your own examples. This will help others getting started using the Expression Script.}}


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	LimeSurvey uses Expressions for the following purposes:		LimeSurvey uses Expressions for the following purposes:
	* [[~~Expression_Manager_examples~~#Relevance\|Relevance]]		* [[ExpressionScript_examples#Relevance\|Relevance]]
	* [[~~Expression_Manager_examples~~#Validation\|Validation]]		* [[ExpressionScript_examples#Validation\|Validation]]
	* [[~~Expression_Manager_examples~~#Text output\|Text output]]		* [[ExpressionScript_examples#Text output\|Text output]]
	* [[~~Expression_Manager_examples~~#Answers storing\|Answers storing]]		* [[ExpressionScript_examples#Answers storing\|Answers storing]]


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	'''Purpose: Validate input/actions on questions/subquestions/answers'''		'''Purpose: Validate input/actions on questions/subquestions/answers'''

	Validation controls whether the respondent's input into a question or action is valid or not. If the result of the ~~Expression~~ is "true" (i.e. 1), the "good" class will be applied to the element and validation message. Otherwise, if the result of the ~~Expression~~ is "false" (i.e. 0)), the "error" class will be apllied to the element and validation message. You can declare a style for these classes in the '''template.css'''.		Validation controls whether the respondent's input into a question or action is valid or not. If the result of the expression is "true" (i.e. 1), the "good" class will be applied to the element and validation message. Otherwise, if the result of the expression is "false" (i.e. 0)), the "error" class will be apllied to the element and validation message. You can declare a style for these classes in the '''template.css'''.

	{\|class="wikitable"		{\|class="wikitable"
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	'''Purposes: (Do something) and write out some text'''		'''Purposes: (Do something) and write out some text'''

	An ~~Expression~~ can be used to write out some text. For example, you can test or calculate something and specify the output depending on the result of the test or calculation. It can also be used to insert the question text, answers, question types, ... of a question used before the Expression is used. Text output can be used everywhere where a text is shown and can return every kind of results.		An expression can be used to write out some text. For example, you can test or calculate something and specify the output depending on the result of the test or calculation. It can also be used to insert the question text, answers, question types, ... of a question used before the Expression is used. Text output can be used everywhere where a text is shown and can return every kind of results.

	{\|class="wikitable"		{\|class="wikitable"
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	This tutorial demonstrates how you can create an overview at the end of the survey, listing all questions and answers via [http://manual.limesurvey.org/~~Expression_Manager~~#Access_to_Variables ~~Expression Manager~~ placeholders].		This tutorial demonstrates how you can create an overview at the end of the survey, listing all questions and answers via [http://manual.limesurvey.org/ExpressionScript#Access_to_Variables ExpressionScript placeholders].
	It also shows how to limit such an overview to answered questions only.		It also shows how to limit such an overview to answered questions only.

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	Where  <small>that.q2</small>  expands to all of q2's subquestions. See [[~~Expression_Manager_~~-~~_presentation~~#The_reserved_.22this.22.2C_.22self.22.2C_and_.22that.22_variables\|self, this and that]] for more detail.		Where  <small>that.q2</small>  expands to all of q2's subquestions. See [[ExpressionScript - Presentation#The_reserved_.22this.22.2C_.22self.22.2C_and_.22that.22_variables\|self, this and that]] for more detail.

	</br>		</br>
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	\|}		\|}

	==Using ~~Expression Manager~~ for Assessments==		==Using ExpressionScript for Assessments==


	Here comes another example on how to use the ~~Expression Manager~~ with [[Question type - Array\|Array type questions]] and assessments:</ br>		Here comes another example on how to use the ExpressionScript with [[Question type - Array\|Array type questions]] and assessments:</ br>

	Let's say you have 2 array questions and you want to save the results of the calculation data to your database. It is actually simple, you will need to create and test your arrays and submit a dummy response to see if it works and gives you the results in the completed page.		Let's say you have 2 array questions and you want to save the results of the calculation data to your database. It is actually simple, you will need to create and test your arrays and submit a dummy response to see if it works and gives you the results in the completed page.

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	-- Audi: N		-- Audi: N

			-- Volvo: Y

	~~如果只想输出选中的项目，可以在输出周围放置一个IF语句并检查复选框值：~~

	<pre>{if(q2_SQ001=="Y",join("- ",q2_SQ001.question,": ",q2_SQ001.shown),"")}</pre>		<div class="mw-translate-fuzzy">
			-- Mercedes: Y
			</div>

			<pre>{ if( q2_SQ001=="Y", join( "- ", q2_SQ001.question, ": ", q2_SQ001.shown ), "" ) }</pre>


			<div class="mw-translate-fuzzy">
			-- Audi: N
			</div>

			<pre>{ listifop( 'value', '==', 'Y', 'question', ', ', that.q2.sgqa ) }</pre>


	=~~===示例2（假设问题类型是阵列（10点~~选~~择））====~~		<div class="mw-translate-fuzzy">
			如果只想输出选中的项目，可以在输出周围放置一个IF语句并检查复选框值：
			</div>

			</br>

	~~- 请评价以下汽车品牌的质量，从1~~ =~~非常差到10~~ =~~非常好？~~		====示例2（假设问题类型是阵列（10点选择））====

	~~-- Mercedes: 7~~

			<div class="mw-translate-fuzzy">
	-- Audi: 9		-- Audi: 9
			</div>

			<div class="mw-translate-fuzzy">
	如果您只想输出评级项目，可以在输出周围放置一个IF语句，并使用以下方法检查当前子问题是否得到了解答：		如果您只想输出评级项目，可以在输出周围放置一个IF语句，并使用以下方法检查当前子问题是否得到了解答：
			</div>

			<div class="mw-translate-fuzzy">
	<pre>{if(!is_empty(q3_SQ001),join("- ",q3_SQ001.question,": ",q3_SQ001.shown),"")}</pre>		<pre>{if(!is_empty(q3_SQ001),join("- ",q3_SQ001.question,": ",q3_SQ001.shown),"")}</pre>
			</div>

			<div class="mw-translate-fuzzy">
	===有两个尺度的问题===		===有两个尺度的问题===
			</div>


			<div class="mw-translate-fuzzy">
	{{Note\|这仅适用于双尺度问题类型。}}		{{Note\|这仅适用于双尺度问题类型。}}
			</div>

			<div class="mw-translate-fuzzy">
	假设正在使用以下代码：		假设正在使用以下代码：
	*问题代码：q4		*问题代码：q4
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	*答案代码比值1：A1，A2，......		*答案代码比值1：A1，A2，......
	*答案代码比值2：B1，B2，......		*答案代码比值2：B1，B2，......
			</div>


			<div class="mw-translate-fuzzy">
	{{Note\|要在某个比例上引用某个子问题的结果，你需要使用QuestionCode . '_' . SubQuestionCode . '_' . ScaleID。 '''请注意，“ScaleID”对于第一个刻度为0，对于另一个刻度为1！''' </br>参考第三个子问题和第二个比例答案的示例：q4_SQ003_1 - Question 4, subquestion 3, second scale。}}		{{Note\|要在某个比例上引用某个子问题的结果，你需要使用QuestionCode . '_' . SubQuestionCode . '_' . ScaleID。 '''请注意，“ScaleID”对于第一个刻度为0，对于另一个刻度为1！''' </br>参考第三个子问题和第二个比例答案的示例：q4_SQ003_1 - Question 4, subquestion 3, second scale。}}
			</div>

			<div class="mw-translate-fuzzy">
			让我们输出两个比例和前两个子问题的结果：
			</div>

			</br>

			===Question with two scales===


	~~让我们输出两个比例和前两个子问题的结果：~~		{{Note\|This applies to the dual scale question type only.}}


			Let's assume that the following codes are being used:
			*Question code: q4
			*Subquestion codes: SQ001, SQ002, ...
			*Answer codes scale 1: A1, A2, ...
			*Answer codes scale 2: B1, B2, ...


			{{Note\|To refer to the result of a certain subquestion on a certain scale, you need to use QuestionCode . '_' . SubQuestionCode . '_' . ScaleID. '''Note that "ScaleID" is 0 for the first scale and 1 for the other!'''</br> Example for referring to the answer of the third subquestion and second scale: q4_SQ003_1 - Question 4, subquestion 3, second scale.}}


			Let's output the results for both scales and the first two subquestions:

	- {q4_SQ001_0.question}: {q4_SQ001_0.shown} / {q4_SQ001_1.shown}		- {q4_SQ001_0.question}: {q4_SQ001_0.shown} / {q4_SQ001_1.shown}
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	- {q4_SQ002_0.question}: {q4_SQ002_0.shown} / {q4_SQ002_1.shown}		- {q4_SQ002_0.question}: {q4_SQ002_0.shown} / {q4_SQ002_1.shown}

	~~要输出子问题文本，你需要将比值ID添加到占位符（尽管两个比例的文本都相同）。因此，我们必须使用~~{~~q4_SQ001_0~~.question}或{~~q4_SQ001_1~~.question}~~而不是~~{~~q4_SQ001~~.question}。		To output the subquestion text, you need to add the scale ID to the placeholder (though the texts are the same for both scales). So instead of {q4_SQ001.question} we have to use {q4_SQ001_0.question} or {q4_SQ001_1.question}.

	如果要仅使用至少一个答案导出/显示子问题的结果，请对每个子问题使用以下语法：		如果要仅使用至少一个答案导出/显示子问题的结果，请对每个子问题使用以下语法：

Elan365 at 06:38, 21 November 2018

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	下面是另一个关于如何将表达式管理器与[[~~问题类型~~ - 数组\|数组类型问题]]和评估结合使用的示例： </ br>		下面是另一个关于如何将表达式管理器与 [[Question type - Array\|阵列类型问题]]和评估结合使用的示例： </ br>

	假设你有2个数组问题，并且希望将计算数据的结果保存到数据库中。它实际上很简单，你需要创建并测试数组并提交虚拟响应以查看它是否有效并在完成的页面中提供结果。		假设你有2个数组问题，并且希望将计算数据的结果保存到数据库中。它实际上很简单，你需要创建并测试数组并提交虚拟响应以查看它是否有效并在完成的页面中提供结果。

Elan365 at 06:37, 21 November 2018

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	'''2. 子问题'''的问题		'''2. 子问题'''的问题'''
	*多选题短文本[Q]		*多选题短文本[Q]
	*多选题[M]		*多选题[M]