let hilight_word = function (key, word, new_arry) {
    var index = word.indexOf(key);
    if (index > -1) {
        var part_before = word.slice(0, index);//截取 關(guān)鍵字前面部分 字符串
        var part_after = word.slice(index + key.length,);//截取 關(guān)鍵字后面部分 字符串
        new_arry.push({key: false, word: part_before});
        new_arry.push({key: true, word: key});
        if (part_after.indexOf(key) > -1) {//如果關(guān)鍵字后面部分 字符串 還存在 關(guān)鍵字key，利用遞歸在繼續(xù)查詢
            _this.hilight_word(key, part_after, new_arry);
        } else {//否則 將關(guān)鍵字后面部分 字符串壓入數(shù)組
            new_arry.push({key: false, word: part_after});
        }
    } else {
        new_arry.push({key: false, word: word});
    }
    return new_arry;
}