functions - day2practice13

by grettynebraska

HTML

<div id="inputDiv" class="left">
Input:<br/>
<textarea id="inputArea"></textarea>
</div>
<div id="buttonDiv" class="left">
<input type="button" id="runButton" value="Run Program">
</div>
<div id="outputDiv" class="left">
Output:<br/>
<textarea id="outputArea"></textarea>
</div>

CSS

.left{
  float: left;
}
.right{
  float: right;
}
.clear{
  clear: both;
}
.hidden{
  display: none;
}
.hint{
  font-size: 75%;
  font-style: italic;
}
#inputDiv, #outputDiv{
  width: 40%;
  padding: 10px;
}
#buttonDiv{
  width: 10%;
  text-align: center;
  padding-top: 30px;
}
#runButton{
  padding: 5px;
}
#inputArea, #outputArea{
  width: 100%;
  height: 200px;
}

/* The switch - the box around the slider */
.switch {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 15px;
}

/* Hide default HTML checkbox */
.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

/* The slider */
.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  -webkit-transition: .4s;
  transition: .4s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 11px;
  width: 11px;
  left: 2px;
  bottom: 2px;
  background-color: white;
  -webkit-transition: .4s;
  transition: .4s;
}

input:checked + .slider {
  background-color: #099;
}

input:focus + .slider {
  box-shadow: 0 0 1px #099;
}

input:checked + .slider:before {
  -webkit-transform: translateX(26px);
  -ms-transform: translateX(26px);
  transform: translateX(26px);
}

/* Rounded sliders */
.slider.round {
  border-radius: 34px;
}

.slider.round:before {
  border-radius: 50%;
}

JavaScript

//The name of this function should not be changed
function main() {
	var string = readLine();
	var a = readNumber();
  var b = readNumber();
  
  // return the first "a" characters of the string
  // return the last "b" characters of teh string
  // return the text from a to b
  var firstA_result = print(firstA(string,a));
  var lastB_result = print(lastB(string,b));
  var a_b_slice_result = print(a_b_slice(string,a,b));
}

function firstA(str,n1) {
	return "First a characters: " +  str.slice(0,n1);
}

function lastB(str, n2) {
	var stringLength = str.length;
	return "Last b characters: " +  str.slice(n2 - 1,stringLength + 1);
}

function a_b_slice(str,n1,n2){
	return "Slice from a to b: " + str.slice(n1,n2);
}









  
/*   print(line1 + line2);
  print(line1 - line2);
  print(line1 * line2);
  print(line1 / line2);
  print(line1 % line2);
  print(line3 + line3 + line3); */

/* --------------------------------------------------
The code below should not be changed at all. 
--------------------------------------------------- */
var background_input = [];
var background_lineIndex = 0;
$("#runButton").click(function() {
  background_input = [];
  background_lineIndex = 0;
  $("#outputArea").html("");
  background_input = $("#inputArea").val().split("\n");
  main();
});

function print(text) {
  $("#outputArea").append(text + "\n");
}

function readLine() {
  if (background_lineIndex >= background_input.length) {
    return "";
  }
  var output = background_input[background_lineIndex];
  background_lineIndex++;
  return output;
}

function readNumber() {
  if (background_lineIndex >= background_input.length) {
    return "";
  }
  var output = background_input[background_lineIndex];
  background_lineIndex++;
  return parseInt(output);
}

$(".switch input").click(function() {
  $("#inputDiv").toggleClass("hidden");
});