x
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<html>
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<body>
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<h2>JavaScript Arrays Methods</h2>
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<script>
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/* Organic Array*/
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let backEnd= ["PHP", "LARAVEL"];
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/* second Array*/
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let frontEnd = ["HTML", "CSS", "JAVASCRIPT"];
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/* third Array*/
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let base = ["Algorithm", "DS"];
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/* new Array store all values */
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let fullStack = backEnd.concat(frontEnd ,base);
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document.write(fullStack);
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</script>
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</body>
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</html>