yvan-ext/assets/pinyin/pinyinUtilPlus.js

function getFirstPinyin(value) {
    return window.pinyinUtil.getFirstLetter(value, true).join('');
}

function getFirstPinyin2(str) {
    var _ = YvanUI.lodash;
    var result = [];
    if (!str) {
        return '';
    }
    for (var i = 0; i < str.length; i++) {
        var unicode = str.charCodeAt(i);
        var ch = str.charAt(i);
        if (unicode >= 19968 && unicode <= 40869) {
            //@ts-ignore
            result.push(getFirstPinyin(ch));
        } else {
            result.push(_.toUpper(ch));
        }
    }
    return result.join("");
}