Validating input field in javascript [closed] - javascript

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Let us consider we have a function for validating all fields in the form. If I am changing the input of one particular field, the only field that has been changed should be validated but not other fields.

If you are using jQuery, you can use .bind() function to trigger on the change of the input box.
$("element").bind('change', function({}));

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Validate IP range and subnets [closed]

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I need to write a JavaScript function which accepts IP range or subnets and validate it.
Like 10.0.0.1/24 should return true
10.0.0.1-10.0.0.10 should return true.
Use:
((\b|\.)(1|2(?!5(?=6|7|8|9)|6|7|8|9))?\d{1,2}){4}(-((\b|\.)(1|2(?!5(?=6|7|8|9)|6|7|8|9))?\d{1,2}){4}|\/((1|2|3(?=1|2))\d|\d))\b
http://regex101.com/r/aJ6jK2
This one also allows leading zeros:
((\b|\.)(0|1|2(?!5(?=6|7|8|9)|6|7|8|9))?\d{1,2}){4}(-((\b|\.)(0|1|2(?!5(?=6|7|8|9)|6|7|8|9))?\d{1,2}){4}|\/((0|1|2|3(?=1|2))\d|\d))\b
http://regex101.com/r/tT8sC5

Using JavaScript's library chosen.js, how can I change the value of a specific option? [closed]

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Before I had chosen.js I could find the specific option, remove it, and then create a new option instead, giving it the same value as it the deleted option has...
Now it doesn't work... the select itself changes - but it is hidden when using chosen.js...
And what was supposed to be a simple task is not simple at all!
Can someone help me?
Thanks!
Use $("#your_field").trigger("chosen:updated"); after updating select options.
Just as is written in reference: http://harvesthq.github.io/chosen/#change-update-events

How to display output using Input tag? [closed]

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Closed 8 years ago.
This question appears to be off-topic because it lacks sufficient information to diagnose the problem. Describe your problem in more detail or include a minimal example in the question itself.
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i am new to javascript, now i am making calculator using javascript, how to display the text using both DIV and INPUT tags. I tried using div but it's not working. how to fix it.
Use this for div
document.getElementById('divid').text="put your text"
for input field
document.getElementById('inputid').value="put your text"
Hope this helps...

Shake textbox when validation fails using JQuery [closed]

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I am trying to shake the input type text when validation fails in JQuery. Please someone tell me how it is to be done. Thanks
If you have jqueryui, you can
$( "#inputfield_id" ).effect( "shake" );
(replace inputfield_id with the id of your input field).
Click here for more details on JQueryUI's Shaking

summary of the entire integers [closed]

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DHTML page which accepts user input into the text field as integers. when the user pressed the "Display" button, your function created in javascript should able to display the sum of the entire integers in an alert message.
Example
Input :
"21547524"
Output:
"2+1+5+4+7+5+2+4 = 30"
var input="21547524";
var additions=input.split('').join('+');
alert(additions+' = '+eval(additions));

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