// Numbas version: exam_results_page_options
{"name": "Show a block of HTML based on a random value", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"rulesets": {}, "ungrouped_variables": ["a"], "statement": "<div id=\"statement-1\" class=\"choosediv\">This is block&nbsp;<strong>ONE</strong></div>\n<div id=\"statement-2\" class=\"choosediv\">This is block&nbsp;<strong>TWO</strong></div>\n<div id=\"statement-3\" class=\"choosediv\">This is block&nbsp;<strong>THREE</strong></div>\n<!-- invisible div to contain the call to the showdiv function -->\n<div style=\"display: none;\">{showdiv(a)}</div>\n<p>Click&nbsp;<em>Try another question like this one</em> to re-randomise the question and see a different block of text.</p>", "variablesTest": {"maxRuns": 100, "condition": ""}, "tags": ["demo"], "question_groups": [{"name": "", "pickQuestions": 0, "questions": [], "pickingStrategy": "all-ordered"}], "showQuestionGroupNames": false, "parts": [], "variable_groups": [], "variables": {"a": {"name": "a", "description": "", "group": "Ungrouped variables", "definition": "random(1,2,3)", "templateType": "anything"}}, "metadata": {"notes": "<p>In this question, each possible bit of content is given a unique ID and set to be hidden by default. A custom javascript function shows the relevant content based on the random variable.&nbsp;</p>\n    <p>Turn off the rich text editor on the statement to see what's going on.</p>", "description": "<p><strong>Update:&nbsp;</strong>you&nbsp;can now use the&nbsp;<em>conditional visibility</em>&nbsp;button to do this more easily - see <a href=\"http://numbas-editor.readthedocs.org/en/latest/how-do-i.html#show-one-of-several-blocks-of-text-based-on-a-random-variable\">the documentation</a>.</p>\n<p>If the statement or advice for your question differs greatly depending on a random variable (for instance, if you're picking from a selection of scenarios), you only want to show content for the relevant scenario.</p>\n<p>This question shows one way of doing that.</p>", "licence": "Creative Commons Attribution 4.0 International"}, "preamble": {"js": "", "css": ""}, "name": "Show a block of HTML based on a random value", "advice": "", "type": "question", "functions": {"showdiv": {"parameters": [["n", "number"]], "language": "javascript", "definition": "//hide all the divs\n$('.choosediv').hide();\n\n//show the one corresponding to the parameter n.\n$('#statement-'+n).show();\n  return $('');", "type": "html"}}, "contributors": [{"name": "Christian Lawson-Perfect", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/7/"}]}]}], "contributors": [{"name": "Christian Lawson-Perfect", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/7/"}]}