分类： javascript/JQuery

//先增加汉化设置
$.fn.datetimepicker.dates['zh'] = {
                days:       ["星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六","星期日"],
                daysShort:  ["日", "一", "二", "三", "四", "五", "六","日"],
                daysMin:    ["日", "一", "二", "三", "四", "五", "六","日"],
                months:     ["一月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月","十二月"],
                monthsShort:  ["一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二"],
                meridiem:    ["上午", "下午"],
                //suffix:      ["st", "nd", "rd", "th"],
                today:       "今天"
        };

//然后修改语言为zh
  $(value).datetimepicker({
      format: 'yyyy-mm-dd hh:ii',
      minView: 1,
      autoclose: true,
      language: "zh"
  });

 

来源：【知乎-前端学习指南】方应杭-https://zhuanlan.zhihu.com/p/22465092

什么是立即执行函数

/*先创建匿名函数，然后立即进行调用。
*/
function(){alert('我是匿名函数')}()

 

例题，为什么点击打印出来的都是6

/*
*/
var liList = ul.getElementsByTagName('li')
for(var i=0; i<6; i++){
  liList[i].onclick = function(){
    alert(i) // 为什么 alert 出来的总是 6，而不是 0、1、2、3、4、5
  }
}

因为此处，i的值是全局变量，并没有单独为每个li赋值i。

而使用立即执行函数，可避免变量污染。

/*
*/
var liList = ul.getElementsByTagName('li')
for(var i=0; i<6; i++){
  !function(ii){
    liList[ii].onclick = function(){
      alert(ii) // 0、1、2、3、4、5
    }
  }(i)
}

 

 

/*
*/
 $.extend($.fn.typeahead.Constructor.prototype, {
    	    	matcher: function (item) {
    	    	      return true;
    	    	}
    	    });

 

来源：http://yuxisanren.iteye.com/blog/2019666

Java服务器端

/*
*java
*coder:宝贤
*/
 String callback = request.getParameter("jsonpCallback");  
		String result = callback + "(" +output+ ")";  
		response.setContentType("text/html");
		response.setCharacterEncoding("UTF-8");
		PrintWriter out = response.getWriter();
		
		response.addHeader("Access-Control-Allow-Origin","*");//'*'表示允许所有域名访问，可以设置为指定域名访问，多个域名中间用','隔开
		
		if("IE".equals(request.getParameter("type"))){
	           response.addHeader("XDomainRequestAllowed","1");
	       }
	       out.print("success");
	       
		out.print(result);
		out.close();

前端Js

/*
*js
*coder:janing
*/

url="http://xxxxxx/Pay2/View2.java";
_post="";
$.ajax({
  "url" : url,
  "type":"post",
  "data":_post,
  "success":function(ret){
    console.log($.parseJSON(ret));
  }
})

 

/*
*/
<label for="wheelDelta"> 滚动值:</label>(IE/Opera)<input id="wheelDelta" type="text" />

<label for="detail"> 滚动值:(Firefox)</label><input id="detail" type="text" />

<script type="text/javascript">
     var oTxt=document.getElementById("txt");
    /***********************
    * 函数：判断滚轮滚动方向
    * 作者：walkingp
    * 参数：event
    * 返回：滚轮方向 1：向上 -1：向下
    *************************/
    var scrollFunc=function(e){
        var direct=0;
        e=e || window.event;

        var t1=document.getElementById("wheelDelta");
        var t2=document.getElementById("detail");
        if(e.wheelDelta){//IE/Opera/Chrome
            t1.value=e.wheelDelta;
        }else if(e.detail){//Firefox
            t2.value=e.detail;
        }
        ScrollText(direct);
    }
    /*注册事件*/
    if(document.addEventListener){
        document.addEventListener('DOMMouseScroll',scrollFunc,false);
    }//W3C
    document.onmousewheel=scrollFunc;//IE/Opera/Chrome/Safari
    </script>

 

原文地址：http://www.jb51.net/article/60398.htm（我知道这不是原作者，请知道的转告我jackqqq123@sina.com）

简单版

/*

var hangstr="this is {0},{1}";
printf(hangstr,"me","guy");
//result :this is me,guy
*/
function printf() {
  var num = arguments.length;
  var oStr = arguments[0];
  for (var i = 1; i < num; i++) {
    var pattern = "\\{" + (i-1) + "\\}";
    var re = new RegExp(pattern, "g");
    oStr = oStr.replace(re, arguments[i]);
  }
  return oStr;
}

完整功能

1.%% - 返回百分号本身
2.%b - 二进制数字
3.%c - ASCII对应的字符
4.%d - 整数
5.%f - 浮点数
6.%o - 八进制数字
7.%s - 字符串
8.%x - 16进制数字 (小写字母形式)
9.%X - 16进制数字 (大写字母形式)

在 % 号和通配字符之间可用的选项包括 (比如 %.2f)：

1.+????? (强制在数字前面显示 + 和 - 符号作为正负数标记。缺省情况下只有负数才显示 - 符号)
2.-????? (变量左对齐)
3.0????? (使用0作为右对齐的填充字符)
4.[0-9]? (设置变量的最小宽度)
5..[0-9] (设置浮点数精度或字符串的长度)

/*
*/
/**
*
*  Javascript sprintf
*  http://www.webtoolkit.info/
*
*
**/
sprintfWrapper = {
  init : function () {
    if (typeof arguments == "undefined") { return null; }
    if (arguments.length < 1) { return null; }
    if (typeof arguments[0] != "string") { return null; }
    if (typeof RegExp == "undefined") { return null; }
    var string = arguments[0];
    var exp = new RegExp(/(%([%]|(\-)?(\+|\x20)?(0)?(\d+)?(\.(\d)?)?([bcdfosxX])))/g);
    var matches = new Array();
    var strings = new Array();
    var convCount = 0;
    var stringPosStart = 0;
    var stringPosEnd = 0;
    var matchPosEnd = 0;
    var newString = '';
    var match = null;
    while (match = exp.exec(string)) {
      if (match[9]) { convCount += 1; }
      stringPosStart = matchPosEnd;
      stringPosEnd = exp.lastIndex - match[0].length;
      strings[strings.length] = string.substring(stringPosStart, stringPosEnd);
      matchPosEnd = exp.lastIndex;
      matches[matches.length] = {
        match: match[0],
        left: match[3] ? true : false,
        sign: match[4] || '',
        pad: match[5] || ' ',
        min: match[6] || 0,
        precision: match[8],
        code: match[9] || '%',
        negative: parseInt(arguments[convCount]) < 0 ? true : false,
        argument: String(arguments[convCount])
      };
    }
    strings[strings.length] = string.substring(matchPosEnd);
    if (matches.length == 0) { return string; }
    if ((arguments.length - 1) < convCount) { return null; }
    var code = null;
    var match = null;
    var i = null;
    for (i=0; i<matches.length; i++) {
      if (matches[i].code == '%') { substitution = '%' }
      else if (matches[i].code == 'b') {
        matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(2));
        substitution = sprintfWrapper.convert(matches[i], true);
      }
      else if (matches[i].code == 'c') {
        matches[i].argument = String(String.fromCharCode(parseInt(Math.abs(parseInt(matches[i].argument)))));
        substitution = sprintfWrapper.convert(matches[i], true);
      }
      else if (matches[i].code == 'd') {
        matches[i].argument = String(Math.abs(parseInt(matches[i].argument)));
        substitution = sprintfWrapper.convert(matches[i]);
      }
      else if (matches[i].code == 'f') {
        matches[i].argument = String(Math.abs(parseFloat(matches[i].argument)).toFixed(matches[i].precision ? matches[i].precision : 6));
        substitution = sprintfWrapper.convert(matches[i]);
      }
      else if (matches[i].code == 'o') {
        matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(8));
        substitution = sprintfWrapper.convert(matches[i]);
      }
      else if (matches[i].code == 's') {
        matches[i].argument = matches[i].argument.substring(0, matches[i].precision ? matches[i].precision : matches[i].argument.length)
        substitution = sprintfWrapper.convert(matches[i], true);
      }
      else if (matches[i].code == 'x') {
        matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(16));
        substitution = sprintfWrapper.convert(matches[i]);
      }
      else if (matches[i].code == 'X') {
        matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(16));
        substitution = sprintfWrapper.convert(matches[i]).toUpperCase();
      }
      else {
        substitution = matches[i].match;
      }
      newString += strings[i];
      newString += substitution;
    }
    newString += strings[i];
    return newString;
  },
  convert : function(match, nosign){
    if (nosign) {
      match.sign = '';
    } else {
      match.sign = match.negative ? '-' : match.sign;
    }
    var l = match.min - match.argument.length + 1 - match.sign.length;
    var pad = new Array(l < 0 ? 0 : l).join(match.pad);
    if (!match.left) {
      if (match.pad == "0" || nosign) {
        return match.sign + pad + match.argument;
      } else {
        return pad + match.sign + match.argument;
      }
    } else {
      if (match.pad == "0" || nosign) {
        return match.sign + match.argument + pad.replace(/0/g, ' ');
      } else {
        return match.sign + match.argument + pad;
      }
    }
  }
}
sprintf = sprintfWrapper.init;

 

来源：咸鱼的星空

/*
*/
var array1 = new Array("1","2","3");   
var array2;   
array2 = array1.concat();   
array1.length = 0;   
alert(array2); //返回1、2、3