JavaScript Line Limitations

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Posted on by Sayhaitokumar

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Hi guys.

Whether there is any limitations for number of lines in Java Script? Because for one of my entity i wrote Java Script code and link to ribbon button and it's working fine, But the no.of lines in the code is nearly 1200 (approx).

For the upcoming forms it may cross that line. I need to know whether my script work fine if it has more lines?

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Bruno Lucas 5,421 on at

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There is no real limit but its a terrible idea to use large JS on Forms. you may rather create a html5 /JS extension.

dynamicday.wordpress.com/.../jquery-and-sdk-rest

large Jquery or massive JS are not recommended by Microsoft on the CRM forms

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Sayhaitokumar 7,042 on at

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Hi Burno,

Thanks for your reply. I'm not using Jquery. My code contains only Java Script

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Bruno Lucas 5,421 on at

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you can write very long JavaScript, the guideline is here and doesn't mention maximum amount of lines:

msdn.microsoft.com/.../hh771584.aspx

but the idea is that longer JS takes longer to load and slow down the form.

if you have hundreds of lines on a onload function, it may not slow down. it depends of what it does and how long it takes to run.

when you have a ribbon button calling a long JS function, the button will display a blue (pressed) color and stay like that for a long time. I've seen people put such slow JS on the ribbon that the button freeze an throw a time out error.

so, pretty much is more on how fast it run, and depending of the infrastructure, hoe long the client takes to load a larger JS.

if may run this to check the performance of your JS:

blogs.msdn.com/.../using-the-crm-diagnostics-page-to-capture-network-performance.aspx

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Hosk on at

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I would split the javascript code into seperate scripts. I don't think there is al limitation but it's harder to work with massive javascript files because you can spend ages scrolling around trying to find certain functions.

It would be a good idea to split the code into common functions then you can use them in different entities.

It will also mean it is easier to maintain if you group your javascript functions into logical groups, not only for this project but also other projects.

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Jitendra Sahu 2 on at

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HI VE,

I have also written JS code with more than 1500 lines.

I will suggest you to break your code in functions and multiple script blocks which you can refer in one go.

For best practice you can refer below Ben's article

community.dynamics.com/.../crm-2011-2013-javascript-programming-best-practices.aspx

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Sayhaitokumar 7,042 on at

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Thank you Guys.

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Community Member on at

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Thanks for the insight. Good for newbies like me.

Harihar

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