javascript - 正则表达式捕获组到大写

Question

如果我使用此代码将单词设为粗体，我该如何将它们也设为大写？

var vow = "Night gathers, and now my watch begins. It shall not end until my death. I shall take no wife, hold no lands, father no children. I shall wear no crowns and win no glory. I shall live and die at my post. I am the sword in the darkness. I am the watcher on the walls. I am the shield that guards the realms of men. I pledge my life and honor to the Night's Watch, for this night and all the nights to come.";

var wordsToBold=["night","watcher"];

function makeBold(input, wordsToBold) {
return input.replace(new RegExp('(\\b)(' + wordsToBold.join('|') + ')(\\b)','ig'), '$1<b>$2</b>$3');
}

document.getElementById("vow_p").innerHTML = makeBold(vow, wordsToBold);

Answer 1

您可以简单地提供回调来执行复杂的操作:

function makeBoldAndUpper(input, wordsToBold) {
    return input.replace(
        new RegExp('\\b(' + wordsToBold.join('|') + ')  \\b','ig'),
        function(match, capture) { return "<b>"+match.toUpperCase()+"</b>"; });
}