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Javascript tips, tricks and code snippets

• Find the highest zIndex value
• Insert a DOM element after another without using a library
• Javascript equivalent of python range function
• Javascript: find key in object by its value
• Javascript: sort an object property by values
• Promisify the native xhr request
• Regex - accessing matched groups
• Reverse String.fromCharCode
• Shuffle an array
• Strip HTML from a String in Javascript
• Unique values of an array
• Using .forEach to loop over NodeList
• Using URLSearchParams to get a page’s query string