I've been looking around on the internet and I cant find any posts that cover how to fix this even though I am certain it is a very simple fix.
Basically I have an array with number values in it and I want to filter out any numbers that are greater than 10 and add them into another array. Here's what I have so far but what I am getting is all of the numbers from the first array.
<!DOCTYPE html>
<html>
<body>
<p id="demo"></p>
<button type="button" onclick="alert(output)">Click Me!</button>
<script>
var input = new Array(9,3,4.3,24,54,8,19,23,46,87,3.14);
var output = new Array();
var length = 1;
for (var i = 0; i < input.length; i += length) {
output.push(input.slice(i, i + length).join(" "));
}
</script>
</body>
</html>
I've been looking around on the internet and I cant find any posts that cover how to fix this even though I am certain it is a very simple fix.
Basically I have an array with number values in it and I want to filter out any numbers that are greater than 10 and add them into another array. Here's what I have so far but what I am getting is all of the numbers from the first array.
<!DOCTYPE html>
<html>
<body>
<p id="demo"></p>
<button type="button" onclick="alert(output)">Click Me!</button>
<script>
var input = new Array(9,3,4.3,24,54,8,19,23,46,87,3.14);
var output = new Array();
var length = 1;
for (var i = 0; i < input.length; i += length) {
output.push(input.slice(i, i + length).join(" "));
}
</script>
</body>
</html>
- developer.mozilla/en-US/docs/Web/JavaScript/Reference/… – You Old Fool Commented Nov 18, 2015 at 5:56
4 Answers
Reset to default 9function predicate(x) { return x > 10 }
var output = input.filter(predicate);
input = input.filter(function(x) { return !predicate(x) })
Looks even cleaner with ES6 arrow functions:
var predicate = (x) => x > 10;
var output = input.filter(predicate);
input = input.filter(x => !predicate(x));
I believe you are looking for something like this.
var input = new Array(9,3,4.3,24,54,8,19,23,46,87,3.14);
var newArray = new Array();
input.forEach(function(number){
if(number > 10)
{
newArray.push(number);
}
});
<!DOCTYPE html>
<html>
<body>
<p id="demo"></p>
<button type="button" onclick="alert(output)">Click Me!</button>
<script>
var input = new Array(9,3,4.3,24,54,8,19,23,46,87,3.14);
var output = new Array();
for (var i = 0; i < input.length; i ++) {
if(input[i] > 10)
{
output.push(input[i]);
}
}
</script>
</body>
</html>
Try using Array.prototype.sort() , Array.prototype.filter()
var input = new Array(9,3,4.3,24,54,8,19,23,46,87,3.14);
var output = new Array();
input = input.sort(function(a, b) {
return a - b
}).filter(function(val, key) {
return val < 10 ? val : output.push(val) && null
})
console.log(input, output);