Jquery validation plugin - TypeError: $(…).validate is not a function

Question

My script throw errors:

TypeError: jQuery.validator is undefined additional-methods.js:20 TypeError: $(...).validate is not a function index.php:115

Answer 1

for me, the problem was from require('jquery-validation') i added in the begging of that js file which Validate method used which is necessary as an npm module

unfortunately, when web pack compiles the js files, they aren't in order, so that the validate method is before defining it! and the error comes

so better to use another js file for compiling this library or use local validate method file or even using CDN but in all cases make sure you attached jquery before