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javascript 默认值替换空字符串——replaceEmptyWith(str)

2011-11-18 14:22:22| 分类： My Projects | 标签： |举报 |字号大中小订阅

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在数据操作过程中，常常会遇见后台传回的空字符串，但是前端显示时又不希望毫无意义的空字符串被直接打印到界面，毕竟人肉眼是不去识别它的。所以在String原生对象中增加了个替换空字符串的方法，感觉比较实用，在此分享：

String.prototype.replaceEmptyWith = function(str) {
    if (typeof str != 'string') {
        return str;
    }
    return this.replace(/^\s*$/, str);
};

不知這裡判斷類型的方式是否嚴謹，若讀者有相關建議，還望能與我分享，謝謝。

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