1、非负整数：^\d+$
2、正整数：^[0-9]*[1-9][0-9]*$
3、非正整数：^((-\d+)|(0+))$
4、负整数：^-[0-9]*[1-9][0-9]*$
5、整数：^-?\d+$
6、非负浮点数：^\d+(\.\d+)?$
7、正浮点数：^((0-9)+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$
8、非正浮点数：^((-\d+\.\d+)?)|(0+(\.0+)?))$
9、负浮点数：^(-((正浮点数正则式)))$
10、英文字符串：^ ...
public String returnString(String str){
String reg = "\\d+";
String reg1 = "\\\\:";
String reg2 = "\\\\+";
String reg3 = "\\\\(";
String reg4 = "\\\\)";
String reg5 = "\\\\[";
String reg6 = "\\\\]";
String reg7 = "\\\\$";
String reg8 = "\\\\*";
String tmp = str.replaceAll("\\+",r ...
//去除左边的空格
function replaceLeftspace(str){
return str.replace(/(^\s*)/g, "");
}
//去除右边的空格
function replaceRightspace(str){
return str.replace(/(\s*$)/g, "");
}
//去除前后空格
function replaceLeftRightspace(str){
return s ...
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