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AnswerRe: How to show or hide a div with only class without ID Pin
Richard Deeming20-Feb-23 21:54
mveRichard Deeming20-Feb-23 21:54 
GeneralRe: How to show or hide a div with only class without ID Pin
flexi220221-Feb-23 0:03
flexi220221-Feb-23 0:03 
GeneralRe: How to show or hide a div with only class without ID Pin
Richard Deeming21-Feb-23 1:43
mveRichard Deeming21-Feb-23 1:43 
GeneralRe: How to show or hide a div with only class without ID Pin
flexi220221-Feb-23 1:59
flexi220221-Feb-23 1:59 
GeneralRe: How to show or hide a div with only class without ID Pin
flexi220221-Feb-23 3:41
flexi220221-Feb-23 3:41 
GeneralRe: How to show or hide a div with only class without ID Pin
Richard Deeming21-Feb-23 22:11
mveRichard Deeming21-Feb-23 22:11 
AnswerRe: How to show or hide a div with only class without ID Pin
Ben A Johnson24-Apr-23 3:48
Ben A Johnson24-Apr-23 3:48 
Questionwant to help in javascript code Pin
Member 1592799418-Feb-23 4:33
Member 1592799418-Feb-23 4:33 




Before:



This is not a test.
This is line 2.




After:



This is totally a test.
This is line 2.



Compare


Differences:









// events

function buttonCompareClicked()
{
var textBefore = document.getElementById("textareaBefore").value;
var textAfter = document.getElementById("textareaAfter").value;

var differences = new TextDifferencer().findDifferencesBetweenStrings
(
textBefore,
textAfter
);

var differencesAsString = differences.toString();

var textareaDifferences = document.getElementById
(
"textareaDifferences"
);
textareaDifferences.innerHTML = differencesAsString;

}

// extensions

function ArrayExtensions()
{
// extension class
}
{
Array.prototype.insertElementAt = function(element, index)
{
this.splice(index, 0, element);
}

Array.prototype.insertElementsAt = function(elements, index)
{
for (var i = 0; i < elements.length; i++)
{
this.splice(index + i, 0, elements[i]);
}
}

Array.prototype.removeAt = function(index)
{
this.splice(index, 1);
}
}

// classes

function TextDifferencer()
{
// do nothing
}
{
TextDifferencer.prototype.findDifferencesBetweenStrings = function(string0, string1)
{
var lengthOfShorterString =
(string0.length <= string1.length ? string0.length : string1.length);

var numberOfExtremes = 2;
var passagePairsMatchingAtExtremes = [];

for (var e = 0; e < numberOfExtremes; e++)
{
var lengthOfMatchingSubstring = 0;

for (var i = 0; i < lengthOfShorterString; i++)
{
var offsetForString0 = (e == 0 ? i : string0.length - i - 1);
var offsetForString1 = (e == 0 ? i : string1.length - i - 1);

var charFromString0 = string0[offsetForString0];
var charFromString1 = string1[offsetForString1];

if (charFromString0 != charFromString1)
{
lengthOfMatchingSubstring = i;
break;
}
}

var matchingSubstringAtExtreme;

if (e == 0)
{
matchingSubstringAtExtreme = string0.substr(0, lengthOfMatchingSubstring);
string0 = string0.substr(lengthOfMatchingSubstring);
string1 = string1.substr(lengthOfMatchingSubstring);
} else // if (e == 1)
{
matchingSubstringAtExtreme = string0.substr(string0.length - lengthOfMatchingSubstring);
string0 = string0.substr(0, string0.length - lengthOfMatchingSubstring);
string1 = string1.substr(0, string1.length - lengthOfMatchingSubstring);
}

var passagePairMatchingAtExtreme = new TextPassagePair
(
true, // doPassagesMatch
[
new TextPassage(matchingSubstringAtExtreme),
new TextPassage(matchingSubstringAtExtreme),
]
);

passagePairsMatchingAtExtremes.push
(
passagePairMatchingAtExtreme
);
}

var passagePairsAll = [];

var passagePairsMatching = this.findPassagePairsMatchingBetweenStrings
(
string0, string1, [ 0, 0 ]
);

this.insertPassagePairsDifferentBetweenMatching
(
string0,
string1,
passagePairsMatching,
passagePairsAll
);

for (var e = 0; e < passagePairsMatchingAtExtremes.length; e++)
{
var passagePairMatchingAtExtreme = passagePairsMatchingAtExtremes[e];
passagePairsAll.insertElementAt
(
passagePairMatchingAtExtreme,
(e == 0 ? 0 : passagePairsAll.length)
);
}

var returnValue = new TextDifferences(passagePairsAll);

return returnValue;
}

TextDifferencer.prototype.findPassagePairsMatchingBetweenStrings = function
(
string0, string1, positionOffsets
)
{
var passagePairsMatching = [];

var longestCommonPassagePair = this.findLongestCommonPassagePair
(
string0,
string1
);

var longestCommonPassageText = longestCommonPassagePair.passages[0].text;
var lengthOfCommonPassage = longestCommonPassageText.length;

if (lengthOfCommonPassage == 0)
{
return passagePairsMatching;
}

passagePairsMatching.push(longestCommonPassagePair);

var passages = longestCommonPassagePair.passages;
var passage0 = passages[0];
var passage1 = passages[1];

var passagePairsMatchingBeforeCommon = this.findPassagePairsMatchingBetweenStrings
(
string0.substr(0, passage0.position),
string1.substr(0, passage1.position),
[
positionOffsets[0],
positionOffsets[1]
]
);

var passagePairsMatchingAfterCommon = this.findPassagePairsMatchingBetweenStrings
(
string0.substr
(
passage0.position + lengthOfCommonPassage
),
string1.substr
(
passage1.position + lengthOfCommonPassage
),
[
positionOffsets[0]
+ passage0.position
+ lengthOfCommonPassage,

positionOffsets[1]
+ passage1.position
+ lengthOfCommonPassage
]
);

var passagePairSetsMatchingBeforeAndAfter =
[
passagePairsMatchingBeforeCommon,
passagePairsMatchingAfterCommon
];

for (var i = 0; i < passagePairSetsMatchingBeforeAndAfter.length; i++)
{
var passagePairsToInsert = passagePairSetsMatchingBeforeAndAfter[i];
passagePairsMatching.insertElementsAt
(
passagePairsToInsert,
(i == 0 ? 0 : passagePairsMatching.length)
);
}

for (var i = 0; i < longestCommonPassagePair.passages.length; i++)
{
var passage = longestCommonPassagePair.passages[i];
passage.position += positionOffsets[i];
}

return passagePairsMatching;
}

TextDifferencer.prototype.findLongestCommonPassagePair = function(string0, string1)
{
var passage0 = new TextPassage("", 0);
var passage1 = new TextPassage("", 0);

var returnValue = new TextPassagePair
(
true, // doPassagesMatch
[
passage0, passage1
]
);

var lengthOfString0 = string0.length;
var lengthOfString1 = string1.length;

var substringLengthsForRow = null;
var substringLengthsForRowPrev;

var lengthOfLongestCommonSubstringSoFar = 0;
var longestCommonSubstringsSoFar = "";
var cellIndex = 0;

// Build a table whose y-axis is chars from string0,
// and whose x-axis is chars from string1.
// Put length of the longest substring in each cell.

for (var i = 0; i < lengthOfString0; i++)
{
substringLengthsForRowPrev = substringLengthsForRow;
substringLengthsForRow = [];

for (var j = 0; j < lengthOfString1; j++)
{
if (string0[i] != string1[j])
{
substringLengthsForRow[j] = 0;
}
else
{
var cellValue;

if (i == 0 || j == 0)
{
// first row or column
cellValue = 1;
}
else
{
// Copy cell to upper left, add 1.
cellValue = substringLengthsForRowPrev[j - 1] + 1;
}

substringLengthsForRow[j] = cellValue;

if (cellValue > lengthOfLongestCommonSubstringSoFar)
{
lengthOfLongestCommonSubstringSoFar = cellValue;
var startIndex = i - lengthOfLongestCommonSubstringSoFar + 1;
var longestCommonSubstringSoFar = string0.substring // not "substr"!
(
startIndex,
i + 1
);

passage0.text = longestCommonSubstringSoFar;
passage0.position = startIndex;

passage1.text = longestCommonSubstringSoFar;
passage1.position = j - lengthOfLongestCommonSubstringSoFar + 1;
}
}
}
}

return returnValue;
}

TextDifferencer.prototype.insertPassagePairsDifferentBetweenMatching = function
(
string0,
string1,
passagePairsToInsertBetween,
passagePairsAll
)
{
passagePairsToInsertBetween.insertElementAt
(
new TextPassagePair
(
true, // doPassagesMatch
[
new TextPassage("", 0),
new TextPassage("", 0)
]
),
0
);

passagePairsToInsertBetween.push
(
new TextPassagePair
(
true, // doPassagesMatch
[
new TextPassage("", string0.length),
new TextPassage("", string1.length)
]
)
);

var pMax = passagePairsToInsertBetween.length - 1;

for (var p = 0; p < pMax; p++)
{
passagePairToInsertAfter = passagePairsToInsertBetween[p];
passagePairToInsertBefore = passagePairsToInsertBetween[p + 1];

this.buildAndInsertPassagePairBetweenExisting
(
string0,
string1,
passagePairToInsertBefore,
passagePairToInsertAfter,
passagePairsAll
);

passagePairsAll.push(passagePairToInsertBefore);
}

var indexOfPassagePairFinal = passagePairsAll.length - 1;

var passagePairFinal = passagePairsAll[indexOfPassagePairFinal];

if
(
passagePairFinal.doPassagesMatch == true
&& passagePairFinal.passages[0].text.length == 0
)
{
passagePairsAll.removeAt(indexOfPassagePairFinal, 1);
}
}

TextDifferencer.prototype.buildAndInsertPassagePairBetweenExisting = function
(
string0,
string1,
passagePairToInsertBefore,
passagePairToInsertAfter,
passagePairsAll
)
{
var lengthOfPassageToInsertAfter = passagePairToInsertAfter.passages[0].text.length;

var positionsForPassagePairDifferent =
[
[
passagePairToInsertAfter.passages[0].position
+ lengthOfPassageToInsertAfter,

passagePairToInsertAfter.passages[1].position
+ lengthOfPassageToInsertAfter
],
[
passagePairToInsertBefore.passages[0].position,
passagePairToInsertBefore.passages[1].position
]
];

var passageToInsert0 = new TextPassage
(
string0.substring // not "substr"!
(
positionsForPassagePairDifferent[0][0],
positionsForPassagePairDifferent[1][0]
),
positionsForPassagePairDifferent[0][0]
);

var passageToInsert1 = new TextPassage
(
string1.substring // not "substr"!
(
positionsForPassagePairDifferent[0][1],
positionsForPassagePairDifferent[1][1]
),
positionsForPassagePairDifferent[0][1]
);

var passagePairToInsert = new TextPassagePair
(
false, // doPassagesMatch
[
passageToInsert0,
passageToInsert1
]
);

if
(
passagePairToInsert.passages[0].text.length > 0
|| passagePairToInsert.passages[1].text.length > 0
)
{
passagePairsAll.push(passagePairToInsert);
}

}
}

function TextDifferences(passagePairs)
{
this.passagePairs = passagePairs;
}
{
// instance methods

TextDifferences.prototype.toString = function()
{
var returnValue = "";

for (var p = 0; p < this.passagePairs.length; p++)
{
var passagePair = this.passagePairs[p];
var passagePairAsString = passagePair.toString();

returnValue += passagePairAsString;
}

return returnValue;
}

}

function TextPassage(text, position)
{
this.text = text;
this.position = position;
}

function TextPassagePair(doPassagesMatch, passages)
{
this.doPassagesMatch = doPassagesMatch;
this.passages = passages;
}
{
TextPassagePair.prototype.toString = function()
{
var returnValue = "";

if (this.doPassagesMatch == true)
{
returnValue = this.passages[0].text;
returnValue = this.escapeStringForHTML(returnValue);
}
else
{
returnValue += "<mark style='background-color:red'>";
returnValue += this.escapeStringForHTML(this.passages[0].text);
returnValue += "</mark><mark style='background-color:yellow'>";
returnValue += this.escapeStringForHTML(this.passages[1].text);
returnValue += "</mark>";

}

return returnValue;
}

TextPassagePair.prototype.escapeStringForHTML = function(stringToEscape)
{
var returnValue = stringToEscape.replace
(
"&", "&amp;"
).replace
(
"<", "&lt;"
).replace
(
">", "&gt;"
).replace
(
"\n", "<br />"
);

return returnValue;
}
}




In this i want to show the similarity percentage of words. can anyone help me
AnswerRe: want to help in javascript code Pin
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mveRichard Deeming19-Feb-23 21:56 
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