(Might be more appropriate to have an if (arr.length=0) to take some other action rather than running the SELECT statement. Try it Syntax js JSON.stringify(value) JSON.stringify(value, replacer) JSON. Due to the way the script works the array has to be turned into a string at least once. join() (()), which returns a string primitive. (And please tell me you're not using client-side JavaScript to form your SQL.)ĮDIT: to allow for an empty array, include a default value for the resulting string, otherwise (as pointed out by missingno) the string would be "''": var newString = arr.length = 0 ? "" : "'" + arr.join("','") + "'" This article will help you learn the easy ways you can convert an array to string in JavaScript: 1. The JSON.stringify () static method converts a JavaScript value to a JSON string, optionally replacing values if a replacer function is specified or optionally including only the specified properties if a replacer array is specified. Array to string containing comma's - JavaScript Ask Question Asked 9 years, 5 months ago Modified 8 years, 11 months ago Viewed 7k times 6 Ok so I'm writing a script that includes whole sentences, but whole sentences can contain comma's. One of JavaScript’s most helpful built-in array methods is. So if you specify a separator that includes the quotation marks and commas you just have to manually append a starting and ending quote for the first and last item (respectively). The Array.join() method returns a string that is all of the array elements concatenated into a single string with an (optional) separator between each item. We can have an optional separator parameter, which specifies the character to use between each element, and by default, the separator is a comma. It is one of the simplest ways to do that. Var quotedAndCommaSeparated = "'" + arr.join("','") + "'" Using the join () method In this method, we have converted an array to a comma-separated string using the join () method. Instead, one way to do it is as follows: var arr = I want to return a string formatted as a list of names separated by commas except for the last two names, which should be separated by an ampersand. The split() method uses a separator to split a String into an ordered sequence of substrings. The quotes aren't preserved because they're not actually part of the string value, they're just necessary to indicate string literals in your code. Use the join () method or toString () method to convert an array to a string with commas in JavaScript. How to Split String Into an Array by Comma in JavaScript.
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