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// this is your main.js script
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// this is your main.js script
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let challenge = '30 Days Of JavaScript'
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console.log(challenge)
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console.log(challenge.length)
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console.log(challenge.toUpperCase())
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console.log(challenge.toLowerCase())
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console.log(challenge.substr(3, 4))
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console.log(challenge.substring(3))
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console.log(challenge.includes("script"))
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console.log(challenge.includes("Script"))
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console.log(challenge.split())
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console.log(challenge.split(" "))
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let bigCorps = "Facebook, Google, Microsoft, Apple, IBM, Oracle, Amazon"
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console.log(bigCorps.split(","))
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console.log(challenge.replace("JavaScript", "Python"))
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console.log(challenge.charAt(15))
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console.log(challenge.charCodeAt("j"))
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console.log(challenge.charCodeAt("J"))
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console.log(challenge.indexOf("a"))
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console.log(challenge.lastIndexOf("a"))
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let sillySentence = "You cannot end a sentence with because because because is a conjunction"
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console.log(sillySentence.indexOf("because"))
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console.log(sillySentence.search("because"))
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console.log(sillySentence.lastIndexOf("because"))
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console.log(challenge.trim())
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console.log(challenge.startsWith("30"))
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console.log(challenge.endsWith("JavaScript"))
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console.log(challenge.match("a"))
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let thirty = "30"
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console.log(thirty.concat(' Days of', ' JavaScript'))
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console.log(challenge.repeat(2))
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