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安裝中文字典英文字典辭典工具!
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- UNDEFINED Definition Meaning - Merriam-Webster
The meaning of UNDEFINED is not defined How to use undefined in a sentence
- UNDEFINED | English meaning - Cambridge Dictionary
UNDEFINED definition: 1 not clearly described, stated, or known: 2 not having been given a definition (= a statement… Learn more
- What Is Undefined? - Computer Hope
The meaning of undefined with an overview, related terms, and examples from programming Understand how undefined variables can lead to common error messages
- UNDEFINED definition in American English | Collins English Dictionary
not given meaning or significance, as by a definition; not defined or explained an undefined term
- How can I check for undefined in JavaScript? - Stack Overflow
If it is undefined, it will not be equal to a string that contains the characters "undefined", as the string is not undefined You can check the type of the variable:
- Undefined - Wikipedia
Look up undefined in Wiktionary, the free dictionary
- UNDEFINED Definition Meaning | Dictionary. com
UNDEFINED definition: without fixed limits; indefinite in form, extent, or application See examples of undefined used in a sentence
- undefined - JavaScript | MDN - MDN Web Docs
You can use undefined and the strict equality and inequality operators to determine whether a variable has a value In the following code, the variable x is not initialized, and the if statement evaluates to true
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