I assume you mean is it possible to speed up the messages the longer the button is held?
Yes, of course, anything is possible.

You can tweak the template to your liking. The part of the code that is controlling repeat in this update is this...
var repeatButtons = $(BUTTON_CLASS + "[data-buttontype='repeater']")
repeatButtons.on('mousedown',function(e) {
var btn = $(this);
if(this.running) return; //already in operation
var topic = btn.data("topic");//get the topic from attribute data-topic="xxxxx"
var payload = btn.data("payload");//get the payload from attribute data-payload="xxxxx"
var interval = btn.data("interval");//get the desired repeat duration
if(isNumeric(interval) == false || interval < 1) interval = 300;//prevent zero & non numeric timeout value
const queueSend = (msg, delay, iteration) => {
if(!this.running) { return }
$scope.send(msg)
if(iteration == 5) { delay = delay/2 }//half the delay (speed up after 5 pulses)
setTimeout(() => {
msg.iteration = iteration;
if(this.running) {
queueSend(msg, delay, iteration+1)
}
},delay)
}
this.running = true;
queueSend({"topic":topic,"payload":payload},interval,1 )
}).on('mouseup blur focusout',function(e) {
this.running = false;
});
If you want it to go faster after 10 messages, then you could change this
if(iteration == 5) { delay = delay/2 }//half the delay (speed up after 5 pulses)
to this...
if(iteration == 5) { delay = delay/2 }//half the delay (speed up after 5 pulses)
else if(iteration == 10) { delay = delay/2 }//half it again after 10 pulses!
Demo flow...
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md-48\">volume_mute</i>\n </md-button>\n</div>\n","storeOutMessages":true,"fwdInMessages":true,"templateScope":"local","x":802,"y":348,"wires":[[]],"info":" class=\"material-icons\"> volume_off"},{"id":"6eeb00d0.da35b","type":"ui_template","z":"a7b009fd18302719","group":"a381801e.309e1","name":"vol + *","order":14,"width":1,"height":1,"format":"<div>\n <md-button class=\"md-button remote-button\" \n data-buttontype=\"repeater\"\n data-interval=\"200\"\n data-topic=\"volume/plus\"\n data-payload=\"volume/plus\"\n aria-label=\"volume plus\"\n >\n <span class=\"fa fa-plus remote-icon\"> </span>\n </md-button>\n</div>\n\n\n","storeOutMessages":true,"fwdInMessages":false,"templateScope":"local","x":682,"y":348,"wires":[[]],"info":"<div id=\"regular_plus\">\n <md-button class=\"md-button remote-button\">\n <i class=\"fa fa-plus remote-icon\"></i>\n </md-button>\n</div>"},{"id":"c58bb5ab.ebc658","type":"ui_template","z":"a7b009fd18302719","group":"a381801e.309e1","name":"vol - 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loaded\n //(may not be necessary!)\n setTimeout(function() {\n //debugger\n $scope.init();\n },100);\n \n var BUTTON_CLASS = \".remote-button\";\n\n /** \n * Initialise all buttons with class BUTTON_CLASS\n */\n $scope.init = function () {\n //debugger\n console.log(\"$scope.init called. Adding event handlers to all buttons with class '\" + BUTTON_CLASS + \"'.\");\n var clickButtons = $(BUTTON_CLASS + \":not([data-buttontype='repeater'])\") \n clickButtons.click(function(e){\n //debugger\n var btn = $(this)\n var type = btn.data(\"buttontype\");//get the button type from attribute data-buttontype=\"xxxxx\"\n var topic = btn.data(\"topic\");//get the topic from attribute data-topic=\"xxxxx\"\n var payload = btn.data(\"payload\");//get the payload from attribute data-payload=\"xxxxx\"\n \n if(type == \"toggle\"){\n var newPayload = payload == 1 ? 0 : 1;\n setButtonState(btn,newPayload)\n $scope.send({\"topic\":topic,\"payload\":newPayload})\n } else {\n $scope.send({\"topic\":topic,\"payload\":payload})\n }\n }); \n\n var repeatButtons = $(BUTTON_CLASS + \"[data-buttontype='repeater']\") \n repeatButtons.on('mousedown',function(e) {\n var btn = $(this);\n if(this.running) return; //already in operation\n var topic = btn.data(\"topic\");//get the topic from attribute data-topic=\"xxxxx\"\n var payload = btn.data(\"payload\");//get the payload from attribute data-payload=\"xxxxx\"\n var interval = btn.data(\"interval\");//get the desired repeat duration\n if(isNumeric(interval) == false || interval < 1) interval = 300;//prevent zero & non numeric timeout value\n const queueSend = (msg, delay, iteration) => {\n if(!this.running) { return }\n $scope.send(msg)\n if(iteration == 5) { delay = delay/2 }//half the delay (speed up after 5 pulses)\n setTimeout(() => {\n msg.iteration = iteration;\n if(this.running) {\n queueSend(msg, delay, iteration+1)\n }\n },delay) \n }\n this.running = true;\n queueSend({\"topic\":topic,\"payload\":payload},interval,1 )\n }).on('mouseup blur focusout',function(e) {\n this.running = false;\n });\n \n };\n \n //watch for node-red msgs\n $scope.$watch('msg', function(msg) {\n //debugger\n if(!msg){ //if no msg \n console.log(\"$scope.$watch('msg', ...) - msg is empty\");\n return;\n }\n if(!msg.topic){ //if no topic set found\n console.log(\"msg.topic is empty - cannot match this to any button\")\n return; //stop processing!\n }\n var buttonSelector = \".remote-button[data-topic='\" + msg.topic + \"']\" \n var $btn = $(buttonSelector);//get the button\n \n if(!$btn.length){ //if no button found\n console.log(buttonSelector + \" not found - cannot set state\")\n return; //stop processing!\n }\n \n if($btn.length > 1){ //if MORE than one button found\n console.log(buttonSelector + \" found more than 1 button - is this intended? Do you have the same data-topic set on multiple buttons?\")\n }\n \n if($btn.data(\"buttontype\") === \"toggle\"){\n if(msg.payload == \"1\"){\n setButtonState($btn, 1);\n } else if(msg.payload == \"0\"){\n setButtonState($btn, 0);\n } else {\n console.log(\"Invalid toggle value in msg.payload, cannot set \" + buttonSelector + \". Ensure msg.payload is either 0 or 1\") \n }\n }\n\n }); \n \n /** \n * helper function to set the correct icon & update the \"data-payload\" memory \n */\n function setButtonState($btn, state){\n \n $btn.data(\"payload\", state);//set data-payload to new state value (used as a memory)\n \n //determine the opposite state\n var oppositeState;\n if(state == \"1\" || state === 1){\n state = 1; //normalise to a number\n oppositeState = 0;\n } else {\n state = 0; //normalise to a number\n oppositeState = 1;\n }\n \n var $icon = $btn.find(\"i\"); //get the <i> element\n if(!$icon.length){\n $icon = $btn.find(\"span\"); //get the <span> element instead!\n }\n if(!$icon.length){\n console.log(\"<i> or <span> not found inside button - cant toggle the icon!\")\n return;//exit this function - nothing to toggle!\n }\n \n //get the old icon and new icon names\n var oldIcon = $btn.data(\"icon\" + oppositeState); //get icon1 or icon2 depending on oppositeState\n var newIcon = $btn.data(\"icon\" + state); //get icon1 or icon2 depending on newPayload\n \n //if we have newIcon and an actual DOM element ($icon) - update it...\n if(newIcon && $icon.length){\n if(newIcon.includes(\"fa-\")){ \n $icon.removeClass(oldIcon).addClass(newIcon); // fontawesome\n } else { \n $icon.text(newIcon); // MDI\n }\n }\n }\n \n /** \n * helper function to determine a value is REALLY a number \n */\n function isNumeric(n){\n if(n === \"\") return false;\n if(n === true || n === false) return false;\n return !isNaN(parseFloat(n)) && isFinite(n);\n }\n \n\n})(scope);\n</script>","storeOutMessages":true,"fwdInMessages":true,"resendOnRefresh":false,"templateScope":"local","className":"","x":802,"y":588,"wires":[["a90df8f.7eac108"]]},{"id":"a90df8f.7eac108","type":"debug","z":"a7b009fd18302719","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":882,"y":528,"wires":[]},{"id":"b5beb822.d8e4d8","type":"ui_template","z":"a7b009fd18302719","group":"a381801e.309e1","name":"lock","order":23,"width":"1","height":"1","format":"<div>\n <md-button class=\"md-button remote-button bigger\" \n data-payload=\"0\" \n data-buttontype=\"toggle\"\n data-topic=\"lock\"\n data-icon0=\"fa-unlock\"\n data-icon1=\"fa-lock\"\n aria-label=\"lock\"\n >\n <span class=\"fa fa-unlock\" aria-hidden=\"true\"> </span>\n </md-button>\n</div>","storeOutMessages":true,"fwdInMessages":true,"templateScope":"local","x":802,"y":468,"wires":[[]]},{"id":"be17d3d4.a92a6","type":"ui_group","name":"HOME","tab":"6af80cca.442cb4","order":1,"disp":true,"width":3,"collapse":false},{"id":"a381801e.309e1","type":"ui_group","name":"Full_Remote2","tab":"9e72c753.ebf048","order":3,"disp":false,"width":"3","collapse":false},{"id":"6af80cca.442cb4","type":"ui_tab","name":"TEST","icon":"dashboard","order":3,"disabled":false,"hidden":false},{"id":"9e72c753.ebf048","type":"ui_tab","name":"HDMI_TV_control","icon":"dashboard","order":7,"disabled":false,"hidden":false}]