Input box can only enter numbers, decimal point, minus sign

sponsored links
function checkValue(val){
var discountValue=new checkValue("");// Define global variables, record the last legitimate values  
function clearNoNum(obj,isMinus,objValue)
        var key = event.keyCode;
        var value = obj.value;
        // Defining legal press list, including a small keypad  0-9, The main keyboard area 0-9, decimal point  , The negative sign, bottom, left, and right arrow keys  ,home,end,delete
        var mayKey =new Array(8,35,36,37,38,39,40,46,48,49,50,51,52,53,54,55,56,57,96,97,98,99,100,101,102,103,104,105,110,190);
        if((key==189||key==109)&&isMinus&&objValue.val.length==0){// According to isMinus determine whether cannot enter a negative number  , If we can judge the negative sign is in the first  
                objValue.val = value;
                return false;
        for(var i=0;i<mayKey.length;i++){
                        objValue.val = value;
                        return false;
        document.execCommand('undo');// If the keyboard is not click on the above button, clear the value of the input box  
        obj.value = objValue.val;// Set the global variable's value to the input box to last; a legal value assigned to an input box again  

function discountCheck(obj){

Call page methods:
<input type="text" onkeyup="discountCheck(this)" />
  • StumbleUpon
  • Digg
  • TwitThis
  • Mixx
  • Technorati
  • Facebook
  • NewsVine
  • Reddit
  • Google
  • LinkedIn
  • YahooMyWeb

Related Posts of Input box can only enter numbers, decimal point, minus sign

  • hibernate using c3p0 connection pooling

    Private c3p0 for open source's JDBC connection pool, with the release hibernate. This article describes how to use the hibernate configuration in c3p0. c3p0 connection pool configuration is v ...

  • Hibernate configuration parameters

    Hibernate in the configuration file: <properties> <property name="" value="create" /> </ properties> Parameter Description: validate load hibernate, the authentication to create a database t ...

  • Build flex + spring + blazeds + hibernate application

    Build flex + spring + blazeds + hibernate application First, set up the project blazeds 1, will blazeds.war extract to a directory, such as: myflex /; 2, set up java works were such as: MyFlex, in the orientation of selection create project from exis ...

  • Hibernate connection pool configuration

    Hibernate connection pool configuration <! - Jdbc -> <property name="connection.driver_class"> oracle.jdbc.driver.OracleDriver </ property> <property name="connection.url"> jdbc: oracle: thin: @

  • hibernate generic generic DAO

    package org.lzpeng.dao; import; import java.util.List; import org.hibernate.Criteria; import org.hibernate.Query; import org.hibernate.criterion.Criterion; import org.springside.modules.orm.hibernate.Page; /** * * @version 2009-1-10 *

  • can not be represented as java.sql.Timestamp

    Development of procedures for the use of hibernate when, some time there is no need to fill in the fields, but after the hibernate query time reported "Java.sql.SQLException: Value'0000-00-00 'can not be represented as java.sql.Timestamp ...

  • Struts2 + hibernate + spring problem user log in

    dao layer services layer action jsp <tr> <td align="center"> <b> user name: </ b> </ td> <td> <s: textfield name = "czyNumber" cssClass = "textstyle" theme = "simple" size = &q

  • Hibernate secondary cache

    Hibernate cache: 2-bit cache, also known as process-level cache or SessionFactory level cache, secondary cache can be shared by all of the session Cache configuration and the use of: Will echcache.xml (the document code in hibernate package directory ...

  • Hibernate's lazy strategy

    hibernate Lazy strategy can be used in: <class> tag, it can be true / false Tags can <PROPERTY> values true / false type of necessary tools to enhance <set> <list> can tag values true / false / extra <many-to-one> <on ...

blog comments powered by Disqus
Recent Entries
Tag Cloud
Random Entries