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Javascript Data Type Q&A » String » compare 

1. How do you do string comparison in JavaScript?    stackoverflow.com

I have a list of data objects to sort. I want to do something like

list.sort(function(item1, item2){
    return item1.attr - item2.attr;
}) 
to sort it based on a string attribute ...

2. Implied string comparison, 0='', but 1='1'    stackoverflow.com

I was debugging something and discovered some strangeness in JavaScript:

alert(1=='') ==> false
alert(0=='') ==> true
alert(-1=='') ==> false
It would make sense that an implied string comparison that 0 should = '0'. This is ...

3. Javascript String Compare    stackoverflow.com

How could the following code sometimes evaluate to false?

(transport.responseText == '1' || transport.responseText == 'CARD_VALID')
My code is as follows:
if (transport.responseText == '1' || transport.responseText == 'CARD_VALID') {
 // do something....
}
else if ...

4. Checking string in Firefox    stackoverflow.com

I am using

var txtname=document.getElementById('<%=txtname.ClientID%>').value;    
if (txtName == "") ....
but in FF this is not working. This condition never become true. Even if it has no value. In IE ...

5. String comparison (possibly a hidden character issue?)    stackoverflow.com

I'm trying to do something fancy with a blogger blog, and when I'm looking at a particular blog, I'd like to be able to know which one it is. So, although there ...

6. comparing two array of strings in javascript    stackoverflow.com

How to compare two array of strings using javascript ?

7. convert htmlelement to string for comparison javascript    stackoverflow.com

I am using a function that obtains a target element id at onclick. Example, if I click on the text element that has the id of 'help'.

var click = (e ...

8. Compatibility Tester (String Comparison Function) in JavaScript    stackoverflow.com

So my girlfriend and her sisters were playing around with this iPhone app where you could enter two names and it would return a % compatibility match. I started playing with ...

9. Comparing strings with hour    stackoverflow.com

Hy guys. How can I compare this data...

var str = '09:29';
var parts = str.split(':');
minutes = parts[1]; 
hour = parts[2];
with actual hour? I have a table with that value and want to compare if ...

10. How to compare everything in 2 strings except the last 12 digits    stackoverflow.com

Hi I want to check an arbitrary number of strings for similarity except for the last 12 characters. Like this these 2 are considered similar CXS101289_LL_20_P11_101029080840/ CXS101289_LL_20_P11_101105125656/ and these 2 CXS101289_LLV_IC_10_P163_110121114144/ CXS101289_LLV_IC_10_P163_110124114042/ but these ...

11. comparing two sets of text    stackoverflow.com

I have two paragraphs of text, one is saved in a file while the other is the piece entered by a user willing to write the same actual paragraph. Now I ...

12. Javascript string comparison    stackoverflow.com

I was attempting to do some string comparisons in javascript. I have seen several tutorials and examples but they do not seem to work. I am missing something fundamental? Attempt 1

function addAspect(aspect) ...

13. Comparing strings in JavaScript    stackoverflow.com

I am writing a Chrome extension, and in part of it, it checks a query against a JSON file. For some reason, when I compare the query and the JSON data ...

14. Need help when comparing strings    stackoverflow.com

need help checking if a text contains a string to search for. Say that I have a text

"somerandomtextstringexampleexample_1"
And I want to compare with for example this String
"example_1_e23wet_est1"
Now ...

15. Compare two time (hh:mm:ss) strings    stackoverflow.com

I have two time strings in hh:mm:ss format. (eg: 12:40:13 and 20:01:01.) How can I compare these in JavaScript?

16. Comparing a string to a two-dimensional array    stackoverflow.com

I have some weird js-source here, that comapres a string to a twodimensional array:

secret = new Array(2);
secret[0]= new Array(2);
secret[1]= new Array(2);

secret[0][0] = 'A';
secret[0][1] = 'B';
secret[1][0] = 'C';
secret[1][1] = 'D';

pwd=prompt("Password: ","");
if (pwd==secret){
alert("Right!");
}
else{
alert("Wrong!");
}
How ...

17. Compare a string with multiple JSON property values using JSONPath    stackoverflow.com

I'm building a search suggestion text box control in JavaScript and am trying to find a way to compare the string the user typed against a JSON Object that represents the ...

18. string comparison in javascript    stackoverflow.com

I see this code from a book:

var a = "one";
var b = "four";
a>b; // will return true
but it doesn't mentioned why "one" is bigger than "four". I tried c = "a" ...

19. Comparing arrays of strings for similarity    stackoverflow.com

I have available to me hundreds of JSON strings. Each of these contains an array of 15-20 words sorted by some predetermined weight. This weight, if it's worth noting, is the ...

20. Comparing two strings for identical values    stackoverflow.com

// Write a program to check whether or not two arrays are identical in size, and hold identical values

string1 = prompt("String 1?");
string2 = prompt("String 2?");

compareNum = 0;

for(i=0; i<string1.length; i++)
{
   ...

21. Javascript == string comparison acting weird    stackoverflow.com

I have this JavaScript code:

if ( data == 'error_getting_solution_comments' )
{
    alert ("test");
}
And for some reason, the if statement does not match up with the string even if the ...

22. Javascript compare strings and get end difference    stackoverflow.com

I have two strings. String A: "The quick brown fox" Strong B: "The quick brown fox jumps over the lazy dog." String B will always contain string A verbatim. There will never be a ...

25. Compare string    bytes.com

webmaniac schreef: does anyone know, How to compare characters in 2 string & return How many characters match in both String. Like the First string is: "Hello World" And second is "This is a Word" So the Function returns 3 Characters "Wor" is same in both. var a = "Hello World"; var b = "This is a Word"; var c = ...

26. How do I compare two string values?    forums.digitalpoint.com

//name can be anything (it is an input text box) getname = function() { check1('world') } check1 = function(name) { //get input name var2 = name; //make sure name does not equal to the response text if(var1 != var2) { //if so execute some code } } //get responseText getcode = function() { str1 = xmlhttpget.responseText; //Could be about any 20 ...

27. Compare string values    forums.devshed.com

28. Compare strings with explorer    forums.devshed.com

30. comparing two strings and printing    phpfreaks.com

i have a function where I would like to compare two strings depending on the position of each letter I need to format each letter differently... if the letter is in the right place print it Red if the letter is in the word, but in the wrong place, print it in blue if it's not part of the word at ...

31. string comparison problem.    phpfreaks.com

here is a snippet of the code thats coursing me problems. Code: [Select] var i=0; for(i=0;i

32. String comparison value issues    sitepoint.com

Hi there, Ive been watching a tutorial video off lynda.com and in the one video she uses: if ("55" < "100") and this equates to false - How does this evaluate to false and on what principle ? the other example is : if ("10" < "100") and this equates to true, again I cannot work out why Ive tried numerous ...

33. Issue with comparing strings    sitepoint.com

I have a string like (12345; 5678). I need to compare this value with another string (63434; 33434). Need to compare each value seperated with ; with the values in the 2nd string. I know this can be done by passing into array. But can someone help me give me the correct code to do this

34. how to compare to string value    sitepoint.com

function validate1(){ if(document.all.doc1.value == ""){ alert('Please select 1st Docoment !!'); document.all.doc1.focus(); document.all.doc2.value = ""; } var doc1 = eval(document.all.doc1.value); var doc2 = eval(document.all.doc2.value); if(doc2 < doc1){ alert('First Document number must greater than secondnd Document number!!'); document.all.doc1.focus(); document.all.doc2.value = ""; } } the above funtion is used to compare value between to value it work with integer but unable to work with ...

35. compare value between two string value    sitepoint.com

Code: