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Text Highlighting Help

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Apr 11.2013

I have an HTML table that is dynamically built and populated with data from a database. I want to incorporate a text search on the page so that when a user types a search term every term within a DIV that wraps the table is highlighted on a character-by-character basis.

Conversely, as the user deletes characters from the input search field, the highlights are recalculated to omit the deleted characters.

I have a script that I found online that works, but in some cases it inserts “ ” and “&” strings as I type in the input box and I cannot for the life of me figure out why.

Any pointers, code samples, links, etc. are appreciated.

Thanks for reading!

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JavaScript

2 Comments(s) ↴

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@JMRKERApr 12.2013 — Why ask for help if you don't show us the code that is giving you problems?

?
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@lenglish01authorApr 12.2013 — I forgot to add it, sorry.

I found this online and for the most part, it works, however sometimes for some reason it inserts " " when entering a search term and "&" when I hit the delete key.

[CODE]function filterTable(Stxt, table) {
dehighlight(document.getElementById(table));
if (Stxt.value.length > 0)
highlight(Stxt.value.toLowerCase(), document.getElementById(table));
}

function dehighlight(container) {
for (var i = 0; i < container.childNodes.length; i++) {
var node = container.childNodes[i];
if (node.attributes && node.attributes['class'] && node.attributes['class'].value == 'highlighted') {
node.parentNode.parentNode.replaceChild(
document.createTextNode(node.parentNode.innerHTML.replace(/<[^>]+>/g, "")),node.parentNode);
return;
} else if (node.nodeType != 3) {
dehighlight(node);
}
}
}

function highlight(Stxt, container) {
for (var i = 0; i < container.childNodes.length; i++) {
var node = container.childNodes[i];
if (node.nodeType == 3) {
var data = node.data;
var data_low = data.toLowerCase();
if (data_low.indexOf(Stxt) >= 0) {
var new_node = document.createElement('span');
node.parentNode.replaceChild(new_node, node);
var result;
while ((result = data_low.indexOf(Stxt)) != -1) {
new_node.appendChild(document.createTextNode(data.substr(0, result)));
new_node.appendChild(create_node(
document.createTextNode(data.substr(result, Stxt.length))));
data = data.substr(result + Stxt.length);
data_low = data_low.substr(result + Stxt.length);
}
new_node.appendChild(document.createTextNode(data));
}
} else {
highlight(Stxt, node);
}
}
}

function create_node(child) {
var node = document.createElement('span');
node.setAttribute('class', 'highlighted');
node.attributes['class'].value = 'highlighted';
node.appendChild(child);
return node;
}[/CODE]


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