For example: When someone types @
it will ready the function.
On Twitter for example, shows something when someone types @USERNAME
then after the space, they don't show anything.
Here an javascript example:
document.getElementById('test').onkeyup = function(oEvent) {
if (typeof oEvent == 'undefined') oEvent = window.event; // IE<9 fix
if (oEvent.keyCode != 32) return; // stop if character is not the space
if (/@USERNAME /.test(this.value)) { // check if @-template is available
this.value = this.value.replace(/@USERNAME /g, 'Dirk '); // replace it
}
}
Also see this jsfiddle .
=== UPDATE ===
Here an jQuery alternative:
$('#test').keyup(function(oEvent) { // set (keyup) event handler
if (oEvent.keyCode != 32) return; // stop if character is not the space
if (/@USERNAME /.test($(this).val())) { // check if @-template is available
$(this).val($(this).val().replace(/@USERNAME /g, 'Dirk ')); // replace it
}
});
Also see this jsfiddle .
也许您可以在按下空格键时尝试onkeypress事件。
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