brightboost
96 lines
2.3 KiB
JavaScript
96 lines
2.3 KiB
JavaScript
let s1 = "Hello ";
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let s2 = "JavaScript";
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let result = s1.concat(s2);
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console.log(result);
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let result = "Hello JavaScript";
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let arr_result = result.split(" ");
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console.log(arr_result);
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let favoriteFruits = "strawberry,watermelon,grapefruit";
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let arr_fruits = favoriteFruits.split(",");
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console.log(arr_fruits);
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let letters = ["a", "b", "c"];
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let x = letters.join();
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console.log(x);
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let letters = ["a", "b", "c"];
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let x = letters.join('-');
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console.log(x);
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let poem = "Roses are red, violets are blue, if I can do JS, then you can too!";
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let index_re = poem.indexOf("re");
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console.log(index_re);
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let indexNotFound = poem.indexOf("python");
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console.log(indexNotFound);
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if (poem.indexOf("python") != -1) {
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// do stuff
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}
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let searchStr = "When I see my fellow, I say hello";
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let pos = searchStr.search("lo");
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console.log(pos);
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let notFound = searchStr.search("JavaScript");
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console.log(notFound);
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let lastIndex_re = poem.lastIndexOf("re");
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console.log(lastIndex_re);
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let pos1 = poem.charAt(10);
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console.log(pos1);
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let pos2 = poem.charAt(1000);
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console.log(pos2);
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let str = "Create a substring";
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let substr1 = str.slice(5);
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let substr2 = str.slice(0,3);
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console.log("1:", substr1);
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console.log("2:", substr2);
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let hi = "Hi buddy";
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let new_hi = hi.replace("buddy", "Pascal");
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console.log(new_hi);
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let new_hi2 = hi.replace("not there", "never there");
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console.log(new_hi2);
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let s3 = "hello hello";
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let new_s3 = s3.replace("hello", "oh");
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console.log(new_s3);
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let s3 = "hello hello";
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let new_s3 = s3.replaceAll("hello", "oh");
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console.log(new_s3);
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let low_bye = "bye!";
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let up_bye = low_bye.toUpperCase();
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console.log(up_bye);
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let caps = "HI HOW ARE YOU?";
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let fixed_caps = caps.toLowerCase();
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console.log(fixed_caps);
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let caps = "HI HOW ARE YOU?";
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let fixed_caps = caps.toLowerCase();
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let first_capital = fixed_caps.charAt(0).toUpperCase().concat(fixed_caps.slice(1));
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console.log(first_capital);
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let encouragement = "You are doing great, keep up the good work!";
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let bool_start = encouragement.startsWith("You");
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console.log(bool_start);
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let bool_start2 = encouragement.startsWith("you");
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console.log(bool_start2);
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let bool_start3 = encouragement.toLowerCase().startsWith("you");
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console.log(bool_start3);
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let bool_end = encouragement.endsWith("Something else");
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console.log(bool_end);
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