I would like to ask if it is possible to trim the length of multiple strings in an array in javascript. The length of each string of my array is different, however I would like to trim the last 2 digit (meaning trimming "-2") for each of them.
var array = ["517577144-2","503222534-2","100003527692828-2","654703438-2","4205501-2"]
Cheers, Karen
map function:
array = array.map(function(d){return d.substr(0,d.length-2)});
or you can use slice method inside:
array = array.map(function(d){return d.slice(0,-2)});
another option is you can use map along with slice function :
array = array.map(function(str){return str.slice(0,str.length-2)});
Look at the 'map' function. This should do it for you: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
You can try like this:
var x;
for(x = 0; x < 10; x++)
{
array[x] = array[x].replace('-2', '');
}
This will remove the last character -2 in the array.
array = array.map(function(item) {
return item.replace('-2', '');
})
If you want to remove any character which is at the last not specifically -2 then
array = array.map(function(item) {
return item.substr(0, item.length-2);
})
Multiple ways to trim last two characters: substr, substring, replace or slice (cleanest solution).
var array = ["517577144-2","503222534-2","100003527692828-2","654703438-2","4205501-2"];
// Using substr method
var trimmed = array.map(function(item) {
return item.substr(0,item.length - 2);
});
log(trimmed);
// Using substring method
trimmed = array.map(function(item) {
return item.substring(0,item.length - 2);
});
log(trimmed);
// Using regular expression in replace method
trimmed = array.map(function(item) {
return item.replace(/.{2}$/,'');
});
log(trimmed);
// Using slice method
trimmed = array.map(function(item) {
return item.slice(0,-2);
});
log(trimmed);
function log(array) {
document.write('<pre>' + JSON.stringify(array, null, 2) + '</pre>');
}Instead of map you can always use a standard for loop too.
