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prevent lengthMenu manipulation through the dom #230

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prevent lengthMenu manipulation through the dom #230

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lengthMenu
DrAlghazali Jan 26, 2023
92c22c4
Merge pull request #1 from DrAlghazali/DrAlghazali-patch-1
DrAlghazali Jan 26, 2023
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11 changes: 9 additions & 2 deletions js/core/core.length.js
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Original file line number Diff line number Diff line change
@@ -1,8 +1,15 @@

function _fnLengthChange ( settings, val )
{
var len = parseInt( val, 10 );
settings._iDisplayLength = len;
// val: is coming directily from the dom
var len = parseInt(val, 10),
//Add a way to prevent end user from changing the lengthMenu value in the dom
menu = settings.aLengthMenu,
d2 = Array.isArray(menu[0]),
originalLengths = d2 ? menu[0] : menu;
// if the value is not in the original values when initiating the data table then choose the min value
// this will be of use when using ssp whith large tables where you want to make sure that there is a LIMIT restriction
settings._iDisplayLength = originalLengths.includes(len) ? len : Math.min(...originalLengths);

_fnLengthOverflow( settings );

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