I have a string which has a number in it that I would like to replace with another number.
ie
<a href="" id="my_link">blah blah 32 blah blah</a>
I know there is only going to be 1 number in this string.
I can get this far:
var my_string = $('a#my_link').text();
But basically I don't know how to then perform a search on my_string for a numeral and replace that number with something else.
Is that possible with jQuery?
Thanks for any ideas.
Many jQuery methods like .text() can accept a function that returns the value to insert.
Try it out: http://jsfiddle.net/6mBeQ/
$('#my_link').text( function(i,txt) {return txt.replace(/\d+/,'other value'); });
This removes the need to run the selector twice.
Also, when you are getting an element by its ID, it is actually a little quicker if you do not include the tag name.
So instead of
$('a#my_link')
it is better to do
$('#my_link')
as I did above.
var new_string = $('a#my_link').text().replace(/[0-9]+/, "somethingelse")
Replace somethingelse with, well, something else. :)
$('a#my_link').text($('a#my_link').text().replace(/\d+/,'something'));
$('a#my_link').text($(this).text().replace(/\d+/,'something')); should be even betterthis in your example isn't referring to the element you think it is. ;)This will work for simple natural numbers containing 0 - 9.
var my_string = $('a#my_link').text().replace(/[0-9]+/, 'replacement');
If you need to match more complex numbers, such as decimals and negative numbers, then this would work:
var my_string = $('a#my_link').text().replace(/-?[0-9]*\.?[0-9]+/, 'replacement');
If you need to match more complex still, like exponential notation, or numbers with commas, you'd need to modify the regex appropriately -- how you do that will depend on how stringently you want to validate.
If you need extract number and then replace with other value.
let temp ="<polygon points=' 42,4874 936,4874 936,3434 42,3434'></polygon>"
temp.replace(/(\d+)/g,v=>v*10)
multiply by 10 to each number
result will be "<polygon points=' 420,48740 9360,48740 9360,34340 420,34340'></polygon>"
string.replace(/\d+/g, v=>v.padStart(5,'0'));First you need to loop through each word by splitting off on the space character using the split() function and send the result to a string array.
Once you do that, test each word for the number. If you find the number use the jquery replaceWith() function: http://api.jquery.com/replaceWith/
Hope that helps.
<script>
let text = "1) hit this";
let result = text.match(/[0-9]\)/g);
let result1_ = text.replace(/[0-9]\)/g,'');
document.getElementById("demo").innerHTML = result_;
</script>
