Detect if html string contains javascript
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jQuery selector for an element that directly contains text?
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javascript variable that contains
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Check if a string contains an element from a list (of strings)
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Detect language from string in PHP
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How can I check if the filename of a LaTeX document contains a string?
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How to detect the presence of URL in a string
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How to check whether dynamically attached event listener exists or not?
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Detecting if a string is all CAPS
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How to tell if a JavaScript function is defined
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How to tell if a string contains valid Python code
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Script tag in JavaScript string
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Find html label associated with a given input
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How to determine if Javascript object is an event?
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How to test if a string is JSON or not?
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(Built-in) way in JavaScript to check if a string is a valid number
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Test if a string contains any of the strings from an array