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Answer» I am trying to extract "67890" from "param1=12345¶m2=67890".
When I USE the following code, I get a blank page.
Code: [SELECT]<html>
<head>
<title>JavaScript Test</title>
</head>
<body>
<script type="text/javascript">
var string1;
var string2;
var string3;
string1 = "param1=12345¶m2=67890";
string2 = string1.match(/param2=[0-9]{5}/);
string3 = string2.match(/[0-9]{5}/);
document.write("string1: " + string1 + "<br />string2: " + string2 + "<br />string3: " + string3);
</script>
</body>
</html>
If I comment out "string3 = string2.match(/[0-9]{5}/);" I get the following result:
Code: [Select]string1: param1=12345¶m2=67890
string2: param2=67890
string3: undefined
Why does the second match() not work?
EDIT: I am sorry for posting this in Networking. I must have been so distracted by my problem that I clicked on the wrong board. Can someone please move it to Web Design?I THINK I have figured it out.
As I currently UNDERSTAND it, match() returns the result as an array EVEN if there is only one result.
To run another match() on the results of the first match(), I have to define which array entry to use.
Here is my new code.
Code: [Select]<script type="text/javascript">
var string1 = "param1=12345¶m2=67890";
var string2 = string1.match(/param2=[0-9]{5}/);
var string3 = string2[0].match(/[0-9]{5}/);
document.write("string1: " + string1 + "<br />string2: " + string2 + "<br />string3: " + string3);
</script>
Here are the results of that code.
Code: [Select]string1: param1=12345¶m2=67890
string2: param2=67890
string3: 67890
After learning about the array, I was able to condense my code the the following:
Code: [Select]<script type="text/javascript">
var string1 = "param1=12345¶m2=67890";
var string2 = string1.match(/param2=([0-9]{5})/);
document.write("string1: " + string1 + "<br />string2: " + string2[1]);
</script>
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