jquery等價dom操做

介紹 jquery 等價於 dom 原生操做。

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()

這裏的 append 可使用 react 的 render 函數來作

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")

// 查找某個節點的全部兄弟節點，並返回數組列表
function siblings(el) {
    var s = [];
    var preEl, nextEl;
    preEl = el.previousSibling;
    nextEl = el.nextSibling;

    // 前面的兄弟節點
    while (preEl) {
        s.push(preEl);
        preEl = preEl.previousSibling;
    }

    // 後面的兄弟節點
    while (nextEl) {
        s.push(nextEl);
        nextEl = nextEl.nextSibling;
    }

    return s;
}

// 查詢子節點中的某個標籤
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 = "";
    })
} )