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(()=>{
doc = document;
var ep = Element.prototype;
ep.attr = function(name){
return this.getAttribute(name);
};
ep.$attr = function(name, value) {
this.setAttribute(name, value);
return this;
};
ep.$attrs = function(attrs) {
Object.entries(attrs).forEach(([attr, value]) => this.$attr(attr, value));
return this;
}
ep.$cls = function(cls) {
return this.$attr("class", cls);
}
ep.$value = function(value) {
this.value = value;
return this;
}
ep.$click = function(callback) {
this.onclick = callback;
return this;
}
const getvalue = x => x.value;
ep.$change2state = function(state, field, valgetter=getvalue) {
this.onchange = () => {
state[field] = valgetter(this);
};
return this;
}
tag = (name, attrs, ...children) => {
const el = doc.createElement(name);
el.$attrs(attrs||{});
for (const child of children.filter(x=>x)) {
el.appendChild((typeof(child) === 'string') ? doc.createTextNode(child) : child);
}
return el;
}
ahref = (href, ...children) => tag("a", {href}, ...children);
labelfor = (for_, ...children) => tag("label", {"for":for_}, ...children);
img = (src) => tag("img", {src});
input = (type) => tag("input", {type});
const TRIVIAL = "main,section,nav,h1,h2,h3,p,,div,span,select,table,tr,td";
for (let name of TRIVIAL.split(",")) {
window[name] = (...children) => tag(name, null, ...children);
}
mount = (root, app) => {
function reload() {
const h = doc.location.hash || "#";
root.replaceChildren(...app(h));
};
reload();
window.addEventListener("hashchange", reload);
root.reload = reload;
};
})()
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