JS的一些扩展：String、StringBuilder、Uri

在最近一个小屁项目中，没有服务端（其实服务端是人家早已经写好的服务），留给我的就只有一大堆的Html和JS，写的好烦躁，所以就写了几个扩展。

多个不说的，这里只是记录，code附上，便以后查询:

; String.format = function() { 
    var s = arguments[0]; 
    for (var i = 0; i < arguments.length - 1; i++) { 
        var reg = new RegExp("\\{" + i + "\\}", "gm"); 
        s = s.replace(reg, arguments[i + 1]); 
    }

    return s; 
};


String.prototype.endsWith = function(suffix) { 
    return (this.substr(this.length - suffix.length) === suffix); 
};

String.prototype.startsWith = function(prefix) { 
    return (this.substr(0, prefix.length) === prefix); 
};

String.prototype.isPositiveInteger = function() { 
    return (new RegExp(/^[1-9]\d*$/).test(this)); 
};

String.prototype.trim = function() { 
    return this.replace(/(^\s*)|(\s*$)|\r|\n/g, ""); 
};

String.prototype.trimLeft = function() { 
    return this.replace(/(^\s*)|\r|\n/g, ""); 
};

String.prototype.trimRight = function() { 
    return this.replace(/(\s*$)|\r|\n/g, ""); 
};

String.prototype.isInteger = function() { 
    return (new RegExp(/^\d+$/).test(this)); 
}; 
String.prototype.isNumber = function(value, element) { 
    return (new RegExp(/^-?(?:\d+|\d{1,3}(?:,\d{3})+)(?:\.\d+)?$/).test(this)); 
};

String.prototype.isValidMail = function() { 
    return (new RegExp(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/).test(this.trim())); 
};

String.prototype.isPhone = function() { 
    return (new RegExp(/(^([0-9]{3,4}[-])?\d{3,8}(-\d{1,6})?$)|(^\([0-9]{3,4}\)\d{3,8}(\(\d{1,6}\))?$)|(^\d{3,8}$)/).test(this)); 
};

String.prototype.isURL = function() { 
    return (new RegExp(/^[a-zA-z]+:\/\/(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$/).test(this)); 
};

String.prototype.trans = function() { 
    return this.replace(/&lt;/g, '<').replace(/&gt;/g, '>').replace(/&quot;/g, '"'); 
};


function StringBuilder() { 
    var sb = new Array(); 
    if (arguments[0] != undefined && arguments[0] != null) { 
        sb[0] = arguments[0]; 
    } 
    this.append = function(str) { 
        sb[sb.length] = str; 
    }; 
    this.appendFormat = function() { 
        var s = arguments[0]; 
        for (var i = 0; i < arguments.length - 1; i++) { 
            var reg = new RegExp("\\{" + i + "\\}", "gm"); 
            s = s.replace(reg, arguments[i + 1]); 
        } 
        sb[sb.length] = s; 
    }; 
    this.toString = function() { 
        /*        var s = ""; 
        for (var i = 0; i < sb.length; i++) { 
        s += sb[i]; 
        } 
        return s;*/ 
        if (arguments[0] != undefined && arguments[0] != null) { 
            return sb.join(arguments[0]); 
        } 
        return sb.join(""); 
    }; 
    this.replace = function(index, str) { 
        sb[index] = str; 
    }; 
    this.replaceFormat = function() { 
        var s = arguments[1]; 
        for (var i = 0; i < arguments.length - 2; i++) { 
            var reg = new RegExp("\\{" + i + "\\}", "gm"); 
            s = s.replace(reg, arguments[i + 2]); 
        } 
        this.replace(arguments[0], s); 
    }; 
    this.remove = function(index) { 
        for (var i = index + 1; i < sb.length; i++) { 
            sb[i - 1] = sb[i]; 
        } 
        sb.length = sb.length - 1;

    }; 
    this.insert = function(index, str) { 
        var len = sb.length + 1; 
        for (var i = index; i < len; i++) { 
            sb[i + 1] = sb[i]; 
        } 
        sb[index] = str; 
    }; 
    this.insertFormat = function() { 
        var s = arguments[1]; 
        for (var i = 0; i < arguments.length - 2; i++) { 
            var reg = new RegExp("\\{" + i + "\\}", "gm"); 
            s = s.replace(reg, arguments[i + 2]); 
        } 
        this.insert(arguments[0], s); 
    }; 
    this.length = function() { 
        return sb.length; 
    }; 
    this.appendLine = function() { 
        if (arguments[0] != undefined && arguments[0] != null) { 
            this.append(arguments[0]); 
        } 
        else { 
            this.append("\r\n"); 
        } 
    } 
}; 
/* TODO:test utils 
var sb = new StringBuilder(true); 
sb.append("123"); 
sb.appendFormat("{0}+{1}", 22, "22"); 
sb.appendFormat("{0}+{1}", 3333, "333"); 
//alert(sb.toString()); 
sb.insert(1, " test insert "); 
sb.insertFormat(1, "{0}***{1}", 111, "11 "); 
sb.replaceFormat(0, "{0}%%%{1}", 000, "00"); 
alert(sb.toString(" g "));*/ 
function Uri(urlstr) { 
    var uri = urlstr; 
    if (uri == undefined || uri == null || uri == "") { 
        uri = window.location.href; 
    }; 
    this.Host = function() { 
        var r = uri.split("?"); 
        if (r.length > 0) { 
            return r[0]; 
        } 
        return ""; 
    }; 
    this.searchString = function() { 
        var r = uri.split("?"); 
        if (r.length > 1) { 
            return unescape(r[1]); 
        } 
        return ""; 
    }; 
    this.Params = function() { 
        var search = this.searchString(); 
        if (search == "") 
            return null; 
        var obj = new Array(); 
        var pair = search.split("&"); 
        if (pair.length > 0) {

            for (var i = 0; i < pair.length; i++) {

                var pairArr = pair[i].split("="); 
                obj[pairArr[0]] = pairArr[1]; 
            } 
        } 
        return obj; 
    }; 
    this.QueryParam = function(key, def) { 
        var obj = this.Params(); 
        if (obj != null) { 
            var value = obj[key]; 
            if (value != undefined && value != null) { 
                return value; 
            } 
        } 
        return def; 
    }; 
}

 测试代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd%22> 
<html xmlns="http://www.w3.org/1999/xhtml%22> 
<head> 
    <title></title>    
    <style type="text/css"> 
        body 
        { 
            background-color: Black; 
        } 
        div 
        { 
            border-bottom- 1px; 
            border-left- 0px; 
            border-top- 1px; 
            border-right- 0px; 
            border-style: solid; 
            border-color: Lime; 
             98%; 
            margin: 8,8; 
            padding: 10px; 
            background-color: Black; 
            color: Olive; 
        } 
    </style>

    <script src="Wolf.Utils.JSExtesion.js" type="text/javascript"></script>

    <script type="text/javascript">

        function StringTest() {

            document.getElementById("result1").innerHTML = String.format("My blog : cnBlogs:{0} ,CSDN :{1}", "http://www.cnblogs.com/whitewolf/%22, "http://blog.csdn.net/grzx2210%22) 
            + "<br/>" + " Wolf ".trim() + " Wolf ".trimLeft() + " Wolf ".trimRight() + "122".isInteger(); 
        }

        function StringBuilderTest() { 
            var sb = new StringBuilder(); 
            sb.appendFormat("My blog : cnBlogs:{0} ,CSDN :{1}", "http://www.cnblogs.com/whitewolf/%22, "http://blog.csdn.net/grzx2210%22); 
            sb.append("<br/>"); 
            sb.append(" remove"); 
            sb.remove(2); 
            sb.append("whitewolf"); 
            sb.appendLine("<br/>"); 
            document.getElementById("result2").innerHTML = "tostring()" + sb.toString() + "<br/>tostring(';')" + sb.toString(";"); 
        } 
        function UriTest() { 
            var uri = new Uri(); 
            document.getElementById("result3").innerHTML = "searchString:" + uri.searchString + "<br/>id=" + uri.QueryParam("id", "id empty"); 
        } 
        function Test() { 
            StringTest(); 
            StringBuilderTest(); 
            UriTest();

        }; 
    </script>

</head> 
<body onload="Test();"> 
    <div id="result1"> 
    </div> 
    <div id="result2"> 
    </div> 
    <div id="result3"> 
    </div> 
</body> 
</html> 

效果：