• Cocos Creator webviw网页置顶增加返回键的方法


    cocos 构建出来的web包里,index.html 文件里添加 <script src="fanhui.js" charset="utf-8"></script>  //(调用以下脚本)

    新建脚本 fanhui_url.js

    var isClick = true;//是否点击确认行为标识

    var styleElement = document.createElement("style");

    styleElement.innerHTML = '#payRetBtnDiv {' +
    ' display: none;' +//初始时隐藏

    ' position: fixed;' +

    ' 35px;' +

    ' height: 35px;' +
    //' background: url(fanhui_btn.24180.png) ' +

    ' background-color: rgba(0, 0, 0, 0.2);' +

    ' z-index: 10000;' +

    ' cursor: pointer;' +

    ' top: 0px;' +

    ' left: 0px;' +

    ' border-radius: 30%;' +

    ' padding: 6px;' +

    ' }' +

    ' ' +

    ' #payRetBtnDiv>div {' +

    ' border-radius: 50%;' +

    ' 100%;' +

    ' height: 100%;' +

    //' background: url(c:/fanhui_btn.png) ' +

    //' background-color: rgba(0, 0, 0, 0.3);' +

    ' transition: all 0.2s;' +

    ' -webkit-transition: all 0.2s;' +

    ' -moz-transition: all 0.2s;' +

    ' -o-transition: all 0.2s;' +

    ' }' +

    ' #payRetBtnDiv:hover>div{' +

    ' background-color: rgba(0, 0, 0, 0.6);' +
    //' background: url(fanhui_btn.png) ' +

    ' } ';

    document.body.appendChild(styleElement);

    var new_element_N = document.createElement('div');

    new_element_N.setAttribute("id", "payRetBtnDiv");

    new_element_N.style.top = "100px";

    new_element_N.style.left = "100px";

    new_element_N.innerHTML = ' <div style="background:url(fanhui_btn.24180.png);background-size:cover"></div>';

    document.body.appendChild(new_element_N);

    //

    //

    var posX;

    var posY;

    var screenWidth = document.documentElement.clientWidth;

    var screenHeight = document.documentElement.clientHeight;

    var fdiv = document.getElementById("payRetBtnDiv");

    fdiv.onmousedown = function(e)

    {

    isClick = true;
    screenWidth = document.documentElement.clientWidth;

    screenHeight = document.documentElement.clientHeight;

    if (!e) {
    e = window.event;
    } //IE

    posX = e.clientX - parseInt(fdiv.style.left);

    posY = e.clientY - parseInt(fdiv.style.top);

    document.onmousemove = mousemove;

    }

    document.onmouseup = function() //释放时自动贴到最近位置的边上

    {

    document.onmousemove = null;

    if ((parseInt(fdiv.style.top) + parseInt(fdiv.clientHeight) / 2) <= (screenHeight / 2)) { //在上半部分

    if ((parseInt(fdiv.style.left) + parseInt(fdiv.clientWidth) / 2) <= (screenWidth / 2)) { //在左半部分

    if ((parseInt(fdiv.style.top) + parseInt(fdiv.clientHeight) / 2) <= (parseInt(fdiv.style.left) + parseInt(fdiv.clientWidth) /
    2)) { //靠近上方

    fdiv.style.top = "0px";

    } else { //靠近左边

    fdiv.style.left = "0px";

    }

    } else { //在右半部分

    if ((parseInt(fdiv.style.top) + parseInt(fdiv.clientHeight) / 2) <= (screenWidth - (parseInt(fdiv.style.left) +
    parseInt(fdiv.clientWidth) / 2))) { //靠近上方

    fdiv.style.top = "0px";

    } else { //靠近右边

    fdiv.style.left = (screenWidth - parseInt(fdiv.clientWidth)) + "px";

    }

    }

    } else { //下半部分

    if ((parseInt(fdiv.style.left) + parseInt(fdiv.clientWidth) / 2) <= (screenWidth / 2)) { //在左半部分

    if ((screenHeight - (parseInt(fdiv.style.top) + parseInt(fdiv.clientHeight) / 2)) <= (parseInt(fdiv.style.left) +
    parseInt(fdiv.clientWidth) / 2)) { //靠近下方

    fdiv.style.top = (screenHeight - parseInt(fdiv.clientHeight)) + "px";

    } else { //靠近左边

    fdiv.style.left = "0px";

    }

    } else { //在右半部分

    if ((screenHeight - (parseInt(fdiv.style.top) + parseInt(fdiv.clientHeight) / 2)) <= (screenWidth - (parseInt(fdiv
    .style.left) + parseInt(fdiv.clientWidth) / 2))) { //靠近上方

    fdiv.style.top = (screenHeight - parseInt(fdiv.clientHeight)) + "px";

    } else { //靠近右边

    fdiv.style.left = (screenWidth - parseInt(fdiv.clientWidth)) + "px";

    }

    }

    }


    }

    function mousemove(ev)

    {
    isClick = false;
    if (ev == null) {
    ev = window.event;
    } //IE

    if ((ev.clientY - posY) <= 0) { //超过顶部

    fdiv.style.top = "0px";

    } else if ((ev.clientY - posY) > (screenHeight - parseInt(fdiv.clientHeight))) { //超过底部

    fdiv.style.top = (screenHeight - parseInt(fdiv.clientHeight)) + "px";

    } else {

    fdiv.style.top = (ev.clientY - posY) + "px";

    }

    if ((ev.clientX - posX) <= 0) { //超过左边

    fdiv.style.left = "0px";

    } else if ((ev.clientX - posX) > (screenWidth - parseInt(fdiv.clientWidth))) { //超过右边

    fdiv.style.left = (screenWidth - parseInt(fdiv.clientWidth)) + "px";

    } else {

    fdiv.style.left = (ev.clientX - posX) + "px";

    }

    // console.log( posX +" "+ fdiv.style.left);

    }

    window.onload = window.onresize = function() { //窗口大小改变事件

    screenWidth = document.documentElement.clientWidth;

    screenHeight = document.documentElement.clientHeight;

    if ((parseInt(fdiv.style.top) + parseInt(fdiv.clientHeight)) > screenHeight) { //窗口改变适应超出的部分

    fdiv.style.top = (screenHeight - parseInt(fdiv.clientHeight)) + "px";

    }

    if ((parseInt(fdiv.style.left) + parseInt(fdiv.clientWidth)) > screenWidth) { //窗口改变适应超出的部分

    fdiv.style.left = (screenWidth - parseInt(fdiv.clientWidth)) + "px";

    }

    document.onmouseup.apply()

    };

    fdiv.addEventListener('touchstart', fdiv.onmousedown, false);

    fdiv.addEventListener('touchmove', function(event) {

    // 如果这个元素的位置内只有一个手指的话

    if (event.targetTouches.length == 1) {

    event.preventDefault(); // 阻止浏览器默认事件,重要

    var touch = event.targetTouches[0];

    if ((touch.pageY) <= 0) { //超过顶部

    fdiv.style.top = "0px";

    } else if (touch.pageY > (screenHeight - parseInt(fdiv.clientHeight))) { //超过底部

    fdiv.style.top = (screenHeight - parseInt(fdiv.clientHeight)) + "px";

    } else {

    fdiv.style.top = (touch.pageY - parseInt(fdiv.clientHeight) / 2) + "px";

    }

    if (touch.pageX <= 0) { //超过左边

    fdiv.style.left = "0px";

    } else if (touch.pageX > (screenWidth - parseInt(fdiv.clientWidth))) { //超过右边

    fdiv.style.left = (screenWidth - parseInt(fdiv.clientWidth)) + "px";

    } else {

    fdiv.style.left = (touch.pageX - parseInt(fdiv.clientWidth) / 2) + "px";

    }

    }

    }, false);

    fdiv.addEventListener('touchend', document.onmouseup, false);

    fdiv.ondblclick = function() { //双击事件可能在手机端浏览器会与网页缩放事件起冲突

    //alert("发挥想法,自定义事件");

    }

    fdiv.onclick = function() { //双击事件可能在手机端浏览器会与网页缩放事件起冲突
    if (isClick == true) {

    //alert("发挥想法,自定义事件");
    cc.find('Canvas').getComponent('dating_chongzhi').HideWebView();
    }

    }

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  • 原文地址:https://www.cnblogs.com/luorende/p/13072983.html
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