if not defined javascript
var a;
try {
a = b + 1; // throws ReferenceError if b is not defined
}
catch (e) {
a = 1; // apply some default behavior in case of error
}
finally {
a = a || 0; // normalize the result in any case
}if not defined javascript
var a;
try {
a = b + 1; // throws ReferenceError if b is not defined
}
catch (e) {
a = 1; // apply some default behavior in case of error
}
finally {
a = a || 0; // normalize the result in any case
}Uncaught ReferenceError: $ is not defined
You should put the references to the jquery scripts first.
<script src="jquery-3.5.1.js"></script>
<script type="text/javascript" src="script.js"></script>not defined javascript
/* Means something was not defined for example you wanted to print */ "X"
/* but X is not defined to defined you have to make a variable for it */
X = "Something" /* Once you define it it'll print the value successfully */Copyright © 2021 Codeinu
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