Vanilla JS Wait for elements to appear in DOM

*Vanilla JS Wait for elements to appear in DOM.md

Run JS code on DOM elements as soon as they appear

This code is written to handle cases when the DOM is being generated, like Angular, Ractive or Svelte, etc. It does a quick (100ms) repeated check for the existence of the DOM elements and when they appear it runs the given function on each elements.

insert.js

	//Common function, waits for the element to appear in the DOM, and then runs the `func` for each element matched
	function waitForElement(selector,func){
		var intval=setInterval(function(){
	    	var match=document.querySelectorAll(selector)  //checking the selector for existence
		    if(match.length!=0) {
				clearInterval(intval)
				match.forEach(func)
		    }
		},100)
	}