BlogJava-我的java生涯-随笔分类-JS日记http://www.blogjava.net/senlin-blog/category/26920.htmlzh-cnThu, 17 Apr 2008 20:40:07 GMTThu, 17 Apr 2008 20:40:07 GMT60js校验常用方法http://www.blogjava.net/senlin-blog/archive/2008/04/17/193817.html我的java生涯我的java生涯Thu, 17 Apr 2008 09:31:00 GMThttp://www.blogjava.net/senlin-blog/archive/2008/04/17/193817.htmlhttp://www.blogjava.net/senlin-blog/comments/193817.htmlhttp://www.blogjava.net/senlin-blog/archive/2008/04/17/193817.html#Feedback0http://www.blogjava.net/senlin-blog/comments/commentRss/193817.htmlhttp://www.blogjava.net/senlin-blog/services/trackbacks/193817.htmlfunction ChkUtil() { }
//校验是否为空(先删除二边空格再验证)
ChkUtil.isNull = function (str) {
if (null == str ||  ""== str.trim()) {
  return true;
} else {
  return false;
}
};
//校验是否全是数字
ChkUtil.isDigit  = function (str) {
var patrn=/^\d+$/;
return patrn.test(str);
};
//校验是否是整数
ChkUtil.isInteger = function (str) {
var patrn=/^([+-]?)(\d+)$/;
return patrn.test(str);
};
//校验是否为正整数
ChkUtil.isPlusInteger = function (str) {
var patrn=/^([+]?)(\d+)$/;
return patrn.test(str);
};
//校验是否为负整数
ChkUtil.isMinusInteger = function (str) {
var patrn=/^-(\d+)$/;
return patrn.test(str);
};
//校验是否为浮点数
ChkUtil.isFloat=function(str){
var patrn=/^([+-]?)\d*\.\d+$/;
return patrn.test(str);
};
//校验是否为正浮点数
ChkUtil.isPlusFloat=function(str){
  var patrn=/^([+]?)\d*\.\d+$/;
  return patrn.test(str);
};
//校验是否为负浮点数
ChkUtil.isMinusFloat=function(str){
  var patrn=/^-\d*\.\d+$/;
  return patrn.test(str);
};
//校验是否仅中文
ChkUtil.isChinese=function(str){
var patrn=/[\u4E00-\u9FA5\uF900-\uFA2D]+$/;
return patrn.test(str);
};
//校验是否仅ACSII字符
ChkUtil.isAcsii=function(str){
var patrn=/^[\x00-\xFF]+$/;
return patrn.test(str);
};
//校验手机号码
ChkUtil.isMobile = function (str) {
var patrn = /^0?1((3[0-9]{1})|(59)){1}[0-9]{8}$/;
return patrn.test(str);
};
//校验电话号码
ChkUtil.isPhone = function (str) {
var patrn = /^(0[\d]{2,3}-)?\d{6,8}(-\d{3,4})?$/;
return patrn.test(str);
};
//校验URL地址
ChkUtil.isUrl=function(str){
var patrn= /^http[s]?:\/\/[\w-]+(\.[\w-]+)+([\w-\.\/?%&=]*)?$/;
return patrn.test(str);
};
//校验电邮地址
ChkUtil.isEmail = function (str) {
var patrn = /^[\w-]+@[\w-]+(\.[\w-]+)+$/;
return patrn.test(str);
};
//校验邮编
ChkUtil.isZipCode = function (str) {
var patrn = /^\d{6}$/;
return patrn.test(str);
};
//校验合法时间
ChkUtil.isDate = function (str) {
  if(!/\d{4}(\.|\/|\-)\d{1,2}(\.|\/|\-)\d{1,2}/.test(str)){
    return false;
  }
  var r = str.match(/\d{1,4}/g);
  if(r==null){return false;};
  var d= new Date(r[0], r[1]-1, r[2]);
  return (d.getFullYear()==r[0]&&(d.getMonth()+1)==r[1]&&d.getDate()==r[2]);
};
//校验字符串：只能输入6-20个字母、数字、下划线(常用手校验用户名和密码)
ChkUtil.isString6_20=function(str){
var patrn=/^(\w){6,20}$/;
return patrn.test(str);
};



]]>js中控制小数点的位数http://www.blogjava.net/senlin-blog/archive/2008/04/15/193075.html我的java生涯我的java生涯Tue, 15 Apr 2008 05:05:00 GMThttp://www.blogjava.net/senlin-blog/archive/2008/04/15/193075.htmlhttp://www.blogjava.net/senlin-blog/comments/193075.htmlhttp://www.blogjava.net/senlin-blog/archive/2008/04/15/193075.html#Feedback0http://www.blogjava.net/senlin-blog/comments/commentRss/193075.htmlhttp://www.blogjava.net/senlin-blog/services/trackbacks/193075.html 

< script language = " JScript " >
Number.prototype.toFixed = function(num)
    {
    // 重新构造toFixed方法,IE5.0+
   with(Math) this .NO = round( this .valueOf() * pow( 10 ,num)) / pow( 10 ,num);
    return  String( / \. / g.exec( this .NO) ? this .NO: this .NO + " . " + String(Math.pow( 10 ,num)).substr( 1 ,num));
   }
alert(( 12.9299 ).toFixed( 2 ));
alert(( 12.9999 ).toFixed( 2 ));
 </ script >   


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