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I want to write a line of code which asks a question and the user has to enter a number. The number is then stored as a variable and used throughout the rest of the script. Such as:
fit1 = "What is your fitness level?"
level = the number the user had entered
something like that. Can't really explain it properly
P.S. I'm writing my code out in gedit because thats what my uni uses.
You can use a prompt like shown below:
var n = prompt("Fitness level");
console.log(n);
window.level = window.prompt('What is my fitness level?');
console.log(window.level); //save in glonal space of window
You can use the Prompt command, and cast the string answer to type number :
var number = parseInt(prompt('Give me a number', '0'));
alert('You said: ' + number);
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I am doing my Javascript. And just imported JSON and printed it out with JSON.stringfy
I am using that site because the JSON contains the URL which I want to link.
I am not getting what I really need as the output.
description": "www.site.com"
This is what I get in my console:
"www.site.com"
This is what I actually want, and remove the quotes.
www.site.com
Please help!
Am not sure what your requirement is but you can do this.
Try Replace function;
const obj = {description: "www.site.com"};
JSON.stringify(obj.description).replace(/"/g,"");
var someStr = 'He said "Hello, my name is Foo"';
console.log(someStr.replace(/['"]+/g, ''));
That should do the trick... (if your goal is to replace all double quotes).
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The page just echoes the user input using GET. I have no idea on what concept to apply to detect if the user has alerted something
The easiest approach would probably be to replace the alert method with your own.
const log = [];
alert = function(alert) {
return (value) => {
log.push(value);
alert(value);
};
}(alert);
alert("Hello!");
console.log(log);
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I'm trying to create a calculator which goes through 18 units. I wanted to make my code shorter by using a for loop. I thought something like this would work:
var i=0;
for (i=0;i<=18;i++)
{
if (Unit[i] = "P" or Unit[i] == "p")
{
UnitTotal[i] = 70;
SetCookie('UnitAns'[i],UnitAns[i]);
}
}
This doesn't work what am I doing wrong or what do I need to do differently?
Unit[i] = "P"
Unless it throws an exception because Unit isn't defined, this will always be true. = is an assignment, not a comparison.
or
or is not a keyword in JavaScript. The OR operator is ||.
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I have an html page with a lot of javascript code, for example the content of a div depends on length of an array :
for (var i = 0; i < movieList.length; i++) {
document.body.appendChild(document.createElement('h2')).appendChild(document.createTextNode('title: ' + movieList[i].title));
var cUL = document.body.appendChild(document.createElement('ul'));
cUL.appendChild(document.createElement('li')).appendChild(document.createTextNode(movieList[i].rating));
cUL.appendChild(document.createElement('li')).appendChild(document.createTextNode(movieList[i].year));
cUL.appendChild(document.createElement('li')).appendChild(document.createTextNode(movieList[i].length));
cUL.appendChild(document.createElement('li')).appendChild(document.createTextNode(movieList[i].isComedy));
cUL.appendChild(document.createElement('li')).appendChild(document.createTextNode('main characters: ' + movieList[i].mainCharacters.join(", ")));
}
I am using these perl LWPx::ParanoidAgent and HTML::TokeParser modules to handle the HTML code but the i want the result of the javascript script
You either need to:
Reverse engineer the JS and apply the changes it would make manually or
Run the HTML and JS through a browser or browser-like tool and read the data from its DOM
There are a number of options for the latter, including WWW::Mechanize::Firefox, WWW::Selenium and Wight.
perhaps https://getfirebug.com/ is what you're looking for. Amongst loads of other things you can view your HTML after JavaScript has altered it.
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i know how to add two strings but don't know how will i obtain which no user pressed and obtain their string something to do with OnClick ?
You can get the id of the clicked button and adding it's string with the number it hab with something like that in your activity:
void methodCalledByOnClick(View v) {
switch(v.getId()) {
case R.id.btn_NrOne:
editTextWhereNumbersHaveToBeDisplayed.setText(
editTextWhereNumbersHaveToBeDisplayed.getText() + v.getText()
);
break;
case R.id.btn_NrTwo:
and so on...
}
}
To get the Number for calculation out of the textEdit please have a look at te answer from Veer Shubhranshu Shrivastav.
Also: Please try to be more precise in future questions you may have!
Do one thing, restrict the user to enter only numeric value in the Textbox.
In android EditText has a attribute inputType make it number. Then the user can only enter number. Then for thread-safe program check the ASCII value of the input between 48-54 (0-9)
Then you use
EditText ed = (EditText) findViewById(R.id.Edit1);
int num = Integer.parseInt(ed.getText); ///You got the number.
Your question did not state whether this is for an android app or a HTML app. In case you are referring to an android app then I recommend going through the Android training. That explains the basics on how to access views etc.
https://developer.android.com/training/basics/firstapp/index.html