How to parse the Split in Javascript

Do you know how to use Split in Javascript? I will give you a brief introduction here. I believe this article will surely help you gain some benefits.

How to use Split in Javascript

Usage: myArray = string. split ("| ")

Note: "|" indicates the feature character to be cut, string indicates the string to be cut, and myArray stores the cut result in an array. Use myArray [n], n = myArray. length.

At first, I used the thinking in asp to think about how to get the maximum subscript of myArray. It must not be Ubound (myArray). I did not find it for a long time, and finally I got it, in fact, arrays in Javascript have a length attribute, myArray. length-1 is the maximum subscript of the myArray array. It's easy to think about it.

Let's look at an example using split: use javascript to get the address bar parameters.

 
 

  
  
<Scriptlanguagescriptlanguage = "JavaScript">
  
  
<! --
  
  
FunctionRequest (strName)
  
  
{
  
  
VarstrHref = "www.nextway.cn/index.htm? A = 1 & B = 1 & c = Split instance ";
  
  
VarintPos = strHref. indexOf ("? ");
  
  
VarstrRight = strHref. substr (intPos + 1 );
  
  
VararrTmp = strRight. split ("&");
  
  
For (vari = 0; I <arrTmp. length; I ++)
  
  
{
  
  
VararrTemp = arrTmp [I]. split ("= ");
  
  
If (arrTemp [0]. toUpperCase () = strName. toUpperCase ())
  
  
ReturnarrTemp [1];
  
  
}
  
  
Return "";
  
  
}
  
  
Alert (Request (""));
  
  
Alert (Request ("B "));
  
  
Alert (Request ("c "));
  
  
// -->
  
  
</Script>
  
  
 
 
 

There is another way to obtain the address bar parameters, the regular expression:

 
 

  
  
<Script>
  
  
String. prototype. getQuery = function (name)
  
  
{
  
  
Varreg = newRegExp ("(^ | &)" + name + "= ([^ &] *) (& | $ )");
  
  
Varr = this. substr (this. indexOf ("? ") + 1). match (reg );
  
  
If (r! = Null) returnunescape (r [2]); returnnull;
  
  
}
  
  
Varstr = "www.nextway.cn/index.htm? A = 1 & B = 1 & c = Split instance ";
  
  
Alert (str. getQuery (""));
  
  
Alert (str. getQuery ("B "));
  
  
Alert (str. getQuery ("c "));
  
  
</Script>