I'm new in javascript the main goal of this code is to type a question in the textbox the browser will check the question if it was in the switches statements and get the answer than write it on the paragraph's id="lable".
- The function randomArray(z)-line[8]- return a random array value .
The console says :
Uncaught TypeError: Cannot read property 'length' of undefined randomArray.........................
The HTML code :
<body>
<img src="Alexs_face.png">
<p style="border:2px black solid; margin:100px 400px 50px 400px">Ask me !</p>
<p id="lable"></p>
<input id="input" type="text" autocomplete="off">
<input id="send" type="button" onclick="dosome()" value="Send">
<input id="delete" type="button" onclick="deleteVal()" value="Delete"></body>
The Javascript:
var greating , userName;
dosome () ;
var firstHello = [[greating+userName+", How can I help you ?" ], ["Hi "+userName+" how can i help ?"] ,[ greating+", how can i help ?"]];
function randomArray (z) {
var realArrayLength = z.length + 1 ;
var random_0toLength = Math.round(Math.floor()*realArrayLength);
for (var x =0; x <= realArrayLength ; x++){
if (random_0toLength === x) {
var y = z [x];
}}
return y ;
};
function getVal() {
write(randomArray (firstHello)); /* <------ trying to write a radom value from the firstHello array
*/
var ask = document.getElementById("input").value;
return ask ;}
var ask = getVal();
function write (x){
var lable = document.getElementById("lable").innerHTML = x;
return lable ;
};
//Capitalize the first letters func :
function capitalize(string) {
return string.charAt(0).toUpperCase() + string.slice(1);
}
//..............
//............................... you can ignore this function
function dosome () {
var ask = getVal();
var question = ask.split(" ");
var date = new Date().toTimeString().split(" ")[0]; ;
var userName ="Ahmed" ;
//5// give you different "greatings" according to ur time
if (date >= "06:00:00" && date <="11:00:00"){
greating = "Good morning ";
var alertTime=""
}
else if (date >= "11:00:00" && date <= "15:00:00"){
greating = "Good afternoon ";
var alertTime=""
}
else if (date >= "15:00:00" && date <="22:00:00"){
greating = "Good evening ";
var alertTime=""
}
else {
greating = " You should have some sleep !";
var alertTime = greating ;
};
//5//end
//
if (question[0] === "what"){
switch ( question[1]){
case "time":
switch (question[2]){
case "is":
switch (question[3]){
case "it":
write("The time is :"+date+alertTime);
break;
default:
};
break;
default:
} ;
break;
case "is":
switch (question[2]){
case "your" :
switch (question[3]){
case "name":
write("Alex !");
break;
case "father":
write("Ahmed Erabti , he made me !");
break;
default:
};
break;
case "my":
switch (question[3]){
case "name":
write("Alex !");
break;
default:
};
break;
default:
};
break;
default: write("unknown");
};}
else if (question[0] === "my"){
switch (question[1]){
case "name":
switch(question[2]){
case "is":
userName = capitalize(question[3]);;
alert("Your name is saved, "+userName);
break;
default:
};
break;
default:
};
}
else if (question[0] === "should" || "could" || "may" || "can" ) {
switch (question[1]) {
case "i" :
switch(question[2]){
case "sleep":
write("Sure ! you can sleep if you want to !!");
break;
default:
}
break;
default:
};
}
if (question[0] === "who"){
switch (question[1]){
case "are":
write ("I'm Alex !");
break;
case "am":
write ("My leader !");
default:
}
};
return userName,greating ;
};
function deleteVal () {
var x = document.getElementById("lable").innerHTML = "" ;
return x ;
};
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