Is it possible to prepend or append additional text to an input value?
I am looking to customize the display of a value without altering the actual value itself. For instance, if the value is 1000, I want it to still return 1000 when accessed.
<input id="myInput" type="text" value="1000">
What is the best way to add the text Foo before or Bar after the number 1000 without changing the value?
The text "Foo" and "Bar" should be static and not editable by the user.
There is a unique approach that can be taken to manipulate the input value by including "Foo" and "Bar" strings in the value attribute using a custom method like setValue() and then extracting the actual value using getValue():
/* Function to add "Foo" and "Bar" to the input value */
function setValue(value) {
$('input').val('Foo' + value + 'Bar');
}
/* Function to retrieve the actual value from the padded input */
function getValue() {
const lengthOfRealValue = $('input').val().length - 6;
return $('input').val().substr(3, lengthOfRealValue);
}
/* Set the value with padding */
setValue('hello-world');
/* Retrieve the actual value */
console.log(getValue())<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<input id="myInput" type="text" value="1000">let userInput = document.getElementById('myInput');
userInput.value = "Foo" + userInput.value + "Bar";
Update
The code snippet below demonstrates CSS styling for a span element:
span {
display: inline-block;
position: relative;
}
span::after {
content: 'mm';
position: absolute;
right: 5px;
top: 0;
}<span>
<input id="myInput" type="text" value="1000">
</span>Utilizing data attributes for multiple input fields
$('.myInput').val(function(){
var bef =$(this).attr('data-before');
var aft =$(this).attr('data-after');
return bef+$(this).val()+aft;
})<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.0/jquery.min.js"></script>
<input class="myInput" type="text" data-before="foo" data-after="bar" value="1000">
<input class="myInput" type="text" data-before="foo1" data-after="bar1" value="1000">
<input class="myInput" type="text" data-before="foo2" data-after="bar2" value="1000">store the amount of 1000 in a data attribute like data-value="1000"
retrieve this value by utilizing document.querySelectorAll('[data-value]');
alternatively
employ
utilize the first input for display and the second for submitting to the server
An easy method is to insert a few elements before and after:
<div>hello</div>
<input id="myInput" type="text" value="50">
<div>world</div>
Afterwards, apply CSS to customize the <input />
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