How To Create A Regular Expression For A Span Attribute?

Ok, I admit it, I suck at Regular Expressions. I'm trying to get the value of attribute data-hover-id. I have the following javascript code: var editText = '; var result = re.exec(str)[1];

Edit: If you need to account for no quotes at all try this one:

/data-hover-id=['"]?([^\s>]+)['"]?/

Solution 2:

One easy way (avoiding the messy string-manipulation):

var editText = "<span class='hover-content' data-hover-id='2' >Some text</span>",
    tmp = document.createElement('div');
tmp.innerHTML = editText;
tmp.style.display = 'none';
document.getElementsByTagName('body')[0].appendChild(tmp);
var hoverId = tmp.getElementsByTagName('span')[0].getAttribute('data-hover-id');
tmp.parentNode.removeChild(tmp);

alert(hoverId);​

JS Fiddle demo.

However, given that:

This string is be manipulated.

I'll also offer:

var editText = "<span class='hover-content' data-hover-id='2' >Some text</span>",
    parts = editText.split(/\s+/),
    hoverId = -1;

for (var i = 0, len = parts.length; i < len; i++) {
    if (parts[i].indexOf('data-hover-id') == 0) {
        hoverId = parseInt(parts[i].split('=')[1].match(/\d+/), 10)
    }
}
console.log(hoverId);​

JS Fiddle demo.

And a more concise (though perhaps fragile) solution:

var editText = '<span class="hover-content" data-hover-id=2 >Some text</span>',
    hoverId = editText.match(/\s?data\-hover\-id=(?:['"])?(\d+)(?:['"])?/)[1] || -1;

console.log(hoverId);

Works with single-quoted (') attribute-values: JS Fiddle demo.

Works with double-quoted (") attribute-values: JS Fiddle demo.

Work with unquoted values: JS Fiddle demo.