how to create a function from a string

var arr = [ “John”, “Peter”, “Sally”, “Jane” ]; var myJSON = JSON.stringify(arr); Here is what the above code is Doing: 1. We create an array called arr. 2. We use JSON.stringify() to convert it into a string. 3. We create a variable called myJSON and store the string inside it.

npm install react-native-segmented-control-tab –save Here is what the above code is Doing: 1. Importing the SegmentedControlTab component from the react-native-segmented-control-tab library. 2. Creating a state variable called selectedIndex and setting it to 0. 3. Creating a function called handleIndexChange that takes in a parameter called index and sets the selectedIndex state variable to the index…

//replace all ios/iphoneX weirdness ie:’‘”“ em dashes and ellipses str = str.replace(“””, ‘”‘).replace(““”, ‘”‘).replace(“’”,”‘”).replace(“‘”,”‘”).replace(/[\u2018\u2019]/g, “‘”).replace(/[\u201C\u201D]/g, ‘”‘).replace(/[\u2013\u2014]/g, ‘-‘).replace(/[\u2026]/g, ‘…’); Here is what the above code is Doing: 1. We’re using the .replace() method to replace all instances of the following characters with the following characters: – ” with ” – “ with ” – ’ with…

$.when( $.getScript( “/mypath/myscript1.js” ), $.getScript( “/mypath/myscript2.js” ), $.getScript( “/mypath/myscript3.js” ), $.Deferred(function( deferred ){ $( deferred.resolve ); }) ).done(function(){ //place your code here, the scripts are all loaded }); Here is what the above code is Doing: 1. The $.getScript() method loads the scripts asynchronously, but in the order specified. 2. The $.Deferred() method is used…

var emailRegex = /^[-!#$%&’*+\/0-9=?A-Z^_a-z{|}~](\.?[-!#$%&’*+\/0-9=?A-Z^_a-z`{|}~])*@[a-zA-Z0-9](-*\.?[a-zA-Z0-9])*\.[a-zA-Z](-?[a-zA-Z0-9])+$/; function isEmailValid(email) { if (!email) return false; if(email.length>254) return false; var valid = emailRegex.test(email); if(!valid) return false; // Further checking of some things regex can’t handle var parts = email.split(“@”); if(parts[0].length>64) return false; var domainParts = parts[1].split(“.”); if(domainParts.some(function(part) { return part.length>63; })) return false; return true; } Here is what the…

const htmlString = `Say hello to multi-line strings!`; Here is what the above code is Doing: 1. We’re creating a variable called htmlString. 2. We’re assigning it a string that contains a multi-line string. 3. We’re using the backslash character (\) to escape the newline character (\n).