在JS中应用正则

前后写的,最主要的可还是正则式哦

其他的也都上框架

1、检测URL类型

  

            <SCRIPT language="javascript">
                function checkURLValid()
                ...{
                    var urlText = document.getElementById("QTextBoxURL").value;
                    var regExp=new RegExp("((^http)|(^https))://([/w-]+.)+[/w-]+(/[/w- ./?%&=]*)?"); //please pay attention here  / is not
                    var found = urlText.match(regExp);//method 1
                    ////var found=regExp.exec(urlText); //method 2
                    
                    if(document.getElementById("QTextBoxLayoutName").value == "" )
                    ...{
                        alert("Layout name is required!");
                        return false;
                    }

                    if(document.getElementById("QTextBoxURL").value == "" )
                    ...{
                        alert("URL is required!");
                        return false;
                    }
                    else
                    ...{
                        if (found == null) //!found
                        ...{    
                            alert("URL format is invalid!");
                            return false;
                        }
                    }                                                
                    
                    return true;
                }                
            </SCRIPT>

2、1+1替换

 

    <script language="javascript">
        function ExpandInfo(controlID)
        ...{
//            alert(controlID.innerText);
//            controlID.style ="display:none";
        }
        
        function ChangePic(controlID)
        ...{
            if(controlID.alt == "expand")
            ...{
                controlID.src="images/expand.gif";
                controlID.alt="collapse";
                
                //handle expand
                var changedHTML;
                changedHTML = controlID.parentElement.innerHTML;
                var regExp = /;/ig;    
                changedHTML = changedHTML.replace(regExp,"<br>");
                alert( controlID.parentElement.innerHTML);                
                controlID.parentElement.innerHTML = changedHTML;
            }
            else
            ...{
                controlID.src="images/collapse.gif";
                controlID.alt="expand";
                
                //handle expand
                var changedHTML;
                changedHTML = controlID.parentElement.innerHTML;
                var regExp = /<br>/ig;    
                changedHTML = changedHTML.replace(regExp,";");
                alert( controlID.parentElement.innerHTML);                
                controlID.parentElement.innerHTML = changedHTML;                
            }
        }            
            </script>