How to bind callback to only fire once before being removed using backbone.js ?
671
1
<!DOCTYPE html>
<html>
<head>
<script src="https://code.jquery.com/jquery-2.1.3.min.js" type="text/javascript"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.2/underscore-min.js" type="text/javascript"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.1.2/backbone-min.js" type="text/javascript"></script>
<script type="text/javascript">
function test() {
var myVal = _.extend({ name: 'hello net-raft.com!' }, Backbone.Events);
myVal.once('myFunc', function () {
var a = document.getElementById("div1").innerHTML;
$("#div1").append(this.name);
});
myVal.trigger('myFunc');
}
</script>
</head>
<body>
<button onclick="test()">click</button>
<hr>
<div>Result:</div>
<hr>
<div id="div1"></div>
</body>
</html>
By 5 years ago
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