javascript - Can't display array output -
<script type="text/javascript"> function show(){ var word = document.getelementbyid("inp").value; var letters = []; for(i=0; i<=word.length; i++){ letters = word.substring(i,i+1); } document.getelementbyid("div").innerhtml = letters[0]; //setinterval(); } </script> </head> <body> <input type="text" id="inp" /> <button onclick="show()">show</button> <br> <div id="div"></div> </body> the output of "letters[0]" showing undefined. want create array, where, let's if input "hello", then, output like:
letters[0] = "h" letters[1] = "e" letters[2] = "l" .... and also, add setinterval() function it, displays letters, 1 one, delay.
thanks!
use push method add elements in array
replace
letters = word.substring(i,i+1); by
letters.push(word.substring(i,i+1)); demo
function show() { var word = document.getelementbyid("inp").value; var letters = []; (i = 0; < word.length; i++) { letters.push(word.substring(i, + 1)); } var = 0; var interval = setinterval(function() { document.getelementbyid("div").innerhtml = letters[i]; ++i === letters.length && clearinterval(interval); }, 250); }<input type="text" id="inp" /> <button onclick="show()">show</button> <br> <div id="div"></div>to array of individual letters can use split
var div = document.getelementbyid("div"); // cache function show() { var word = document.getelementbyid("inp").value; // latest value var letters = word.split(''), // split every character , store in letters array = 0; // initialization 0 div.innerhtml = ''; // clear previous text var interval = setinterval(function() { div.innerhtml += letters[i]; // append character ++i === letters.length && clearinterval(interval); // clear interval after appending characters }, 100); // call function after every 100 milliseconds }<input type="text" id="inp" /> <button onclick="show()">show</button> <br> <div id="div"></div>
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