Custom JavaScript

Custom JavaScriptCustom JavaScript is not something to be taken lightly, and even though there are a lot of advantages that it can provide for websites, it's important to keep in mind that it must also be used correctly to get the most out of it. Although the 'defer attribute' is probably one of the best ways to use custom JavaScript, there are some things that you should know before attempting to implement it on your own. Learn what they are so that you can have all the benefits of custom JavaScript without any of the drawbacks.The first thing that you should keep in mind when writing custom JavaScript is that the defer attribute is usually better than the content= '' attribute. What this means is that although the defer attribute should be used as a fallback, there are some situations where it will be better for you to be able to display content. In most cases, the defer attribute will only prevent JavaScript from running if there is a problem with the page that the JavaScript was originally needed for. In the case of standard Ajax calls, it will only run if the server doesn't provide the results requested by the user.When writing custom JavaScript that can only run on pages that have certain restrictions, or when the DOM doesn't allow for it, it's best to use the content=' ' attribute. This attribute is still a good method to use when you want to display something on a page, but you don't want JavaScript to run as long as it's not needed. It should only run when it's needed, but because you're displaying some of the source code, there are no problems with that.The other thing that you should keep in mind when writing custom JavaScript is that it will most likely run the first time that it's loaded. There are many ways to force JavaScript to run, and there are even more ways to run it in a script or on a page, but when writing code in the first place, you should always assume that it will execute regardless of what you try to do. If you think you're going to change the code, then that's the only time that it will run.When writing custom JavaScript, the defer attribute is usually better than the content= '' attribute. Although the defer attribute should be used as a fallback, there are some situations where it will be better for you to be able to display content. In most cases, the defer attribute will only prevent JavaScript from running if there is a problem with the page that the JavaScript was originally needed for.When writing custom JavaScript, the defer attribute is usually better than the content= '' attribute. Although the defer attribute should be used as a fallback, there are some situations where it will be better for you to be able to display content. In most cases, the defer attribute will only prevent JavaScript from running if there is a problem with the page that the JavaScript was originally needed for.When writing custom JavaScript, the defer attribute is usually better than the content= '' attribute. Although the defe r attribute should be used as a fallback, there are some situations where it will be better for you to be able to display content.When writing custom JavaScript, the defer attribute is usually better than the content= '' attribute. Although the defer attribute should be used as a fallback, there are some situations where it will be better for you to be able to display content. In most cases, the defer attribute will only prevent JavaScript from running if there is a problem with the page that the JavaScript was originally needed for.