Blocks/blocks.js at master · nhab/Blocks · GitHub

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function toggle(el){
	if(el.value=='-')
	{
		el.value='+';
		el.parentElement.nextElementSibling.style.display='none';
	}
	else
	{
		el.value='-';
		el.parentElement.nextElementSibling.style.display='block';
	}
}

function toggleAll(btn){
	if(btn.value=='-')
		btn.value="+"
	else
		btn.value="-";
	var elements = document.getElementsByTagName('input');

for (var i = 0; i < elements.length;i++) {
		if	(elements[i].type="button")
			toggle(elements[i]);
	}

}

function AddToggleButtons(){
	var childDivs = document.getElementsByTagName('h2');

	for( i=0; i< childDivs.length; i++ )
	{
		var childDiv = childDivs[i];

		const para = document.createElement("input");
		para.setAttribute("value","-");
		para.setAttribute("type","button");
		para.setAttribute("onclick","toggle(this)");
		para.setAttribute("class","toggleButton");
		childDiv.prepend(para);
	}
}

function AddToggleButtonsToH2andH3(){
	for(j=2;j<=3;j++)
	{
		var childDivs = document.getElementsByTagName('h'+j.toString());

		for( i=0; i< childDivs.length; i++ )
		{
			var childDiv = childDivs[i];

			const para = document.createElement("input");
			para.setAttribute("value","-");
			para.setAttribute("type","button");
			para.setAttribute("onclick","toggle(this)");
			para.setAttribute("class","toggleButton");
			childDiv.prepend(para);
		}
	}
}

// you can use the next function by 'then': ReplaceLtGt().then(f2);
function ReplaceLtGt() {
	return new Promise((resolve, reject) => {
		len = $("code").length;
		for (i = 0; i < len; i++) {
			if ($("code").eq(i)[0] == undefined) return;
			s = $("code").eq(i)[0].innerHTML
			//s=s.replaceAll("<"," < ")
			s = s.replaceAll("<", "&lt;")
			//s=s.replaceAll("&gt;",">")
			//s=s.replaceAll("&amp;","&")

			$("code").eq(i).innerHTML=s
			resolve();
		}
	});
}

//n can be 3 or 4
function AddToggleButtonsToH(n){
	for(j=2;j<=n;j++)
	{
		var childDivs = document.getElementsByTagName('h'+j.toString());

		for( i=0; i< childDivs.length; i++ )
		{
			var childDiv = childDivs[i];

			const para = document.createElement("input");
			para.setAttribute("value","-");
			para.setAttribute("type","button");
			para.setAttribute("onclick","toggle(this)");
			para.setAttribute("class","toggleButton");
			childDiv.prepend(para);
		}
	}
}

function FontSizeIncrease() {
	var paragraphs = document.getElementsByTagName("p");
	for (var i = 0; i < paragraphs.length; i++) {
	  var fontSize = window.getComputedStyle(paragraphs[i], null).getPropertyValue("font-size");
	  var currentSize = parseFloat(fontSize);
	  paragraphs[i].style.fontSize = (currentSize + 1) + "px";
	}
}

function FontSizeDecrease() {
	var paragraphs = document.getElementsByTagName("p");
	for (var i = 0; i < paragraphs.length; i++) {
	  var fontSize = window.getComputedStyle(paragraphs[i], null).getPropertyValue("font-size");
	  var currentSize = parseFloat(fontSize);
	  paragraphs[i].style.fontSize = (currentSize -1) + "px";
	}
}