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| 1 | +/* |
| 2 | +Random Character id |
| 3 | + |
| 4 | +Create a Javascript function, which generates a random character id comprising of alphabets and numbers for given input length. |
| 5 | +Hint: Return the generated random character id in the function stringGen(). |
| 6 | + |
| 7 | +Given HTML Code: |
| 8 | +<html> |
| 9 | +<body> |
| 10 | +<div> |
| 11 | +Enter the length of character: |
| 12 | +<input type='text' id="num"> |
| 13 | +<button onclick="stringGen()">submit</button> |
| 14 | +<p id="result"></p> |
| 15 | +</div> |
| 16 | +<script type="text/javascript" src="index.js"></SCRIPT> |
| 17 | +</body> |
| 18 | +</html> |
| 19 | + |
| 20 | +Given JS Code: |
| 21 | +function stringGen() |
| 22 | +{ |
| 23 | + //Type your code here. |
| 24 | + return //Enter your return statement |
| 25 | +} |
| 26 | +*/ |
| 27 | +------------------------------------------------------------------------------------------------------------------------------------- |
| 28 | + |
| 29 | +<!DOCTYPE html> |
| 30 | +<html> |
| 31 | +<body> |
| 32 | + |
| 33 | +<div> |
| 34 | +Enter the length of character: |
| 35 | +<input type='text' id="num"> |
| 36 | +<button onclick="stringGen()">submit</button> |
| 37 | +<p id="result"></p> |
| 38 | +</div> |
| 39 | + |
| 40 | +<script> |
| 41 | + |
| 42 | +function stringGen() |
| 43 | +{ |
| 44 | + //Type your code here. |
| 45 | + var len= document.getElementById("num").value; |
| 46 | + var text = ""; |
| 47 | + var alpCount=0; |
| 48 | + var digCount=0; |
| 49 | + var charList = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"; |
| 50 | +for(var i=0; i < len; i++ ) |
| 51 | +{ |
| 52 | +text += charList.charAt(Math.floor(Math.random() * charList.length)); |
| 53 | + |
| 54 | +//Count the presence of digits and alphabets. |
| 55 | +if(text.charAt(i)>=0&&text.charAt(i)<=9){ |
| 56 | + digCount++; |
| 57 | + } |
| 58 | +else{ |
| 59 | + alpCount++; |
| 60 | + } |
| 61 | +} |
| 62 | + |
| 63 | +//If the generated charcterId doesn't contain any number or any aplhabet, insert one because it should contain both. |
| 64 | +if(digCount==0){ |
| 65 | +var randNum= Math.floor(Math.random()*10); |
| 66 | +//Insert any random number at the last position(or position of your choice). |
| 67 | +var finText= text.replace(text.charAt(text.length-1),randNum); |
| 68 | +document.getElementById("result").innerHTML = finText; |
| 69 | +return finText; |
| 70 | +} |
| 71 | +else if(alpCount==0){ |
| 72 | +var randNum= Math.floor(Math.random() * (90 - 65 + 1) ) + 65; |
| 73 | +//Insert any random alphabet(small or capital letter as per your choice) at the last position(or position of your choice). |
| 74 | +var finText= text.replace(text.charAt(text.length-1),String.fromCharCode(randNum)); |
| 75 | +document.getElementById("result").innerHTML = finText; |
| 76 | +return finText; |
| 77 | +} |
| 78 | +else{ |
| 79 | +document.getElementById("result").innerHTML = text; |
| 80 | +return text; |
| 81 | +} |
| 82 | +} |
| 83 | +</script> |
| 84 | +</body> |
| 85 | +</html> |
| 86 | + |
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