By using [foo^="bar"], you can target nodes with the attribute foo that starts with the value bar.
Is there a method to select nodes based on an attribute name that begins with a specific string? This would be useful for selecting all nodes with a data-* attribute.
Edit: I am interested in this approach to optimize performance, as it allows me to avoid iterating through all nodes to find these attributes. I plan to use querySelectorAll and its Sizzle polyfill for older browsers.
Another approach is to utilize the .filter() method in jQuery:
$('target').filter(function() {
return $.grep(this.attributes, function(attr) {
return attr.nodeName.indexOf('custom') === 0;
}).length;
});
While it may seem like an excessive solution, creating a custom selector could benefit you:
$.expr[':'].attribute = function (element, index, regex_string) {
var regex = new RegExp(regex_string[3]);
for (var i = 0; i < element.attributes.length; i++) {
if (element.attributes[i].name.match(regex)) {
return true;
}
}
return false;
};
Example: http://jsfiddle.net/RJCTm/
In your specific situation, you would use:
$('div:attribute(^data)') // starts with
$('div:attribute(foo$)') // ends with
This approach is somewhat reminiscent of the standard attribute selector syntax.
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