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snabbdom/h.js

34 lines
969 B
JavaScript

var VNode = require('./vnode');
var is = require('./is');
function addNS(data, children) {
data.ns = 'http://www.w3.org/2000/svg';
if (children !== undefined) {
for (var i = 0; i < children.length; ++i) {
addNS(children[i].data, children[i].children);
}
}
}
module.exports = function h(sel, b, c) {
var data = {}, children, text, i;
if (arguments.length === 3) {
data = b;
if (is.array(c)) { children = c; }
else if (is.primitive(c)) { text = c; }
} else if (arguments.length === 2) {
if (is.array(b)) { children = b; }
else if (is.primitive(b)) { text = b; }
else { data = b; }
}
if (is.array(children)) {
for (i = 0; i < children.length; ++i) {
if (is.primitive(children[i])) children[i] = VNode(undefined, undefined, undefined, children[i]);
}
}
if (sel[0] === 's' && sel[1] === 'v' && sel[2] === 'g') {
addNS(data, children);
}
return VNode(sel, data, children, text, undefined);
};