JS-component/code at master · zenking/JS-component · GitHub

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var jdb = (function  () {

        var Jdb = function  (str) {

        };
        Jdb.prototype.alert = function  (str) {
            alert(str);
            return this;
        };
        Jdb.prototype.console = function  (str) {
            console.log(str);
            return this;
        };
        return new Jdb();
    })()
    调用直接 jdb.alert('调用alert')
    2
    var jdb = (function  () {

        var Jdb = function  (str) {

        };
        Jdb.prototype.alert = function  (str) {
            alert(str);
            return this;
        };
        Jdb.prototype.console = function  (str) {
            console.log(str);
            return this;
        };
        return  Jdb;
    })()
    调用的时候需要先进行实例化  new jdb().alert('调用alert')