I want to import the jquery package, but the browser reports an error. What is the reason?
**Uncaught ReferenceError: $ is not defined
at a.js:1(anonymous) @ a.js:1**
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a.js depends on jquery. You need to introduce jquery first and then a.js. Take a look at the page to see if it is in this order.
Additional explanation I tried it on chrome and it worked.
$ is not defined, which means it has not been introduced successfully. Pay attention to the js reference order, jQuery should be placed first
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