String matching (Javascript)

Question

I have the following javascript functions:

function fun1()
{
...
return 'Over';
}
function fun2()
{
...
return 'Hello';
}
function fun3()
{
..
return 'Over';
}

function fun4()
{
..
return 'Over';
}
function fun5()
{
...
return 'Bye';
}
....
var errmsg='';

errmsg+=fun1();
errmsg+=fun2();
errmsg+=fun3();

var newmsg = errmsg;

if (newmsg.match('Over'))
{
checklist();
}

so as per the code, if fun1() and fun2() are true, errmsg= 'OverHello', and if fun1() and fun3() are true, errmsg = 'OverOver'

I want newmsg to match ONLY with the functions that return 'Over'...so if errmsg='Over' or 'OverOver' or so on, ONLY then it would run the function checklist().

Is there any way, I can check this condition using string methods (like match, contains, etc)?

Please help.

Ammu · Accepted Answer · 2011-05-06 07:07:33Z

2

There is a match() function for string objects in javascript.

You can use it as follows

var pattern=/over/gi;
alert(errmsg.match(pattern));

answered May 6, 2011 at 7:07

Ammu

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3 Comments

gin Over a year ago

Thx Ammu. But this function is similar to what I have already used in my code.:)

Ammu Over a year ago

Actually we are passing a regular expression to the match() function so that it can return all the occurrence of "over" in the errmsg. Just try out this snippet. var str = "HelloOver"; alert(str.match(/over/gi));//This will alert over---- alert(str.match(over));//This will return nothing

gin Over a year ago

Ah yes! You are right.I tried it out and it works like a charm! Thx Ammu

James Jithin · Accepted Answer · 2011-05-06 07:19:12Z

1

The following test should solve your requirement:

errmsg.match(/^(Over)+$/)

answered May 6, 2011 at 7:19

James Jithin

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1 Comment

Joel Lee Over a year ago

+1 I forgot the ^ & $ in my answer. Note, however that this will return the matched string, not true/false.

Dev.Jaap · Accepted Answer · 2011-05-06 07:08:21Z

0

Maybe you can replace all 'Over' text in the string. If any text is left after that operation, you string is containing something else than 'Over' and your check returns false

answered May 6, 2011 at 7:08

Dev.Jaap

1518 bronze badges

2 Comments

gin Over a year ago

Can you please tell me how I can use the replace function in this case? Thx

Dev.Jaap Over a year ago

@Gin: try str.replace(/over/gi, "")

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