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Jquery why write entry function, I believe that many inexperienced people do not know what to do, so this article summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

The function of the entry function, waiting for the page to be loaded, has an independent scope

The jQuery entry function is written as follows

/ / method 1 $(document) .ready (function () {alert ("hello lnj");}); / / method 2, the most commonly used $(function () {alert ("hello lnj");}) / / Mode 3 jQuery (document) .ready (function () {alert ("hello lnj");}); / / Mode 4 jQuery (function () {alert ("hello lnj");})

Example:

(function () {var str=$ ("# tt"). Val () +'\ r\ nThe entry functions have finished loading'+ str $("# tt") .val (str)); have you mastered why jquery writes entry functions after reading the above? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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