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25 lines
823 B
25 lines
823 B
/**
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* When included, this snippet prevents contextual menus and keystrokes that
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* make it possible to cut/paste/copy text from the page.
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* This is useful for very secure exams.
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* @author Alberto Torreblanca
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*/
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$(document).ready(function(){
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$(document).on("cut copy paste contextmenu",function(e) {
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e.preventDefault();
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});
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$(document).keydown(function(e) {
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var forbiddenKeys = new Array('c', 'x', 'v', 'p', 's');
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var keyCode = (e.keyCode) ? e.keyCode : e.which;
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var isCtrl;
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isCtrl = e.ctrlKey
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if (isCtrl) {
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for (i = 0; i < forbiddenKeys.length; i++) {
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if (forbiddenKeys[i] == String.fromCharCode(keyCode).toLowerCase()) {
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return false;
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}
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}
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}
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return true;
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});
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});
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