$(replacingHtml).find("[data-replaced='true']").length is 0. but it is exist.

[[email protected]…]

var replacingHtml = "<tr colspan='15'><table width='100%' height='350' data-replaced='true' data-rep='" + product_id + "'><tr><th class='system_header'>Financier name</th><th class='system_header'>Address</th><th class='system_header'>Contact number</th><th class='system_header'>Fax number</th><th class='system_header'>Email</th><th class='system_header'>Region</th></tr></table></tr>";

alert($(replacingHtml).find("[data-replaced='true']").length);

[anonymous]

​http://jsfiddle.net/nanoquantumtech/j8Q3C/

var replacingHtml = "<tr colspan='15'><table width='100%' height='350' data-replaced='true' data-rep='" + product_id + "'><tr><th class='system_header'>Financier name</th><th class='system_header'>Address</th><th class='system_header'>Contact number</th><th class='system_header'>Fax number</th><th class='system_header'>Email</th><th class='system_header'>Region</th></tr></table></tr>";

alert($(replacingHtml).find("[data-replaced='true']").length);

​http://jsfiddle.net/nanoquantumtech/j8Q3C/

[anonymous]

I'm pretty sure that's not valid HTML

​http://www.w3.org/TR/html401/struct/tables.html#h-11.2.5

If you console.log the element that results from that HTML, it doesn't contain the table element since it's not valid which is why it doesn't find the data-replaced attribute on it.

[sindresorhus]

As anonymous said, not valid HTML. If you console.log() it, it will output:

<tr>​
    <th class=​"system_header">​Financier name​</th>​
    <th class=​"system_header">​Address​</th>​
    <th class=​"system_header">​Contact number​</th>​
    <th class=​"system_header">​Fax number​</th>​
    <th class=​"system_header">​Email​</th>​
    <th class=​"system_header">​Region​</th>​
</tr>​