介绍 jquery
等价于 dom
原生操作。
empty()
$(“#id”).empty()
var el = document.getElementById("app");
var child, nextChild;
for(child = el.firstChild; child; ) {
nextChild = child.nextSibling;
el.removeChild(child);
child = nextChild;
}
append()
$(“#id”).append()
这里的 append
可以使用 react
的 render
函数来做
render(
<div>Hello wolrd</div>,
document.getElementById("app")
)
css()
$(“.tdxmask”).css({ display: “none” });
var els = document.getElementsByClassName("tdxmask");
els.forEach(function(el) {
el.style.display = "none";
})
extend()
$.extend({}, item.hot.style, {“background-image”: “none” })
style = Object.assign({}, item.hot.style, {"background-image": "none" });
sibings(), find(), removeClass()
$el.siblings().find(“span”).removeClass(“sortup”).removeClass(“sortdown”)
// 查找某个节点的所有兄弟节点,并返回数组列表
function siblings(el) {
var s = [];
var preEl, nextEl;
preEl = el.previousSibling;
nextEl = el.nextSibling;
// 前面的兄弟节点
while (preEl) {
s.push(preEl);
preEl = preEl.previousSibling;
}
// 后面的兄弟节点
while (nextEl) {
s.push(nextEl);
nextEl = nextEl.nextSibling;
}
return s;
}
// 查询子节点中的某个标签
function findChildNodesByTagName(el, tagName) {
var s = [];
var childNodeList = el.childNodes;
for(var i = 0; i < childNodeList.length; i++) {
var cnode = childNodeList[i];
if(cnode.nodeName.toUpperCase() == tagName.toUpperCase()) {
s.push(cnode);
}
}
return s;
}
let sibs = siblings(el);
sibs.map( sib => {
findChildNodesByTagName(sib, "span").map( node => {
// debugger;
node.className = "";
})
} )