var str = "";
str += "";
str += "delete";
str += "
";
var matches = [];
str.replace(/href=("|')(.*?)("|')/g, function(a, b, match) {
matches.push(match);
});
console.log(matches);
or if you don't care about the href:
var matches = str.match(/href=("|')(.*?)("|')/);
console.log(matches);