Overview
Trim whitespace (including full-width spaces) from both ends of a string. Optionally converts to lowercase.
Signature
trim(str: string | null | undefined, toLower?: boolean): string | null | undefined
| Parameter | Type | Default | Description |
|---|---|---|---|
str |
string | null | undefined |
- | String to trim. |
toLower |
boolean |
false |
If true, converts the trimmed string to lowercase. |
Returns:
string | null | undefined — Trimmed string, or null/undefined if input is null/undefined.Example
Result:
foo bar
<div class="mb-3">
<label class="form-label">Input value</label>
<input id="trimInput" class="form-control form-control-solid" value=" foo bar ">
</div>
<div>
<span class="fw-bold">Result: </span>
<code id="trimResult">foo bar</code>
</div>
var trim = metronicExtension.utils.trim;
var input = document.getElementById('trimInput');
var result = document.getElementById('trimResult');
function update() {
result.textContent = trim(input.value) || '(empty)';
}
input.addEventListener('input', update);
update();