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这两段jquery 代码是不是有命名冲突

  •  
  •   older · Dec 10, 2013 · 3250 views
    This topic created in 4628 days ago, the information mentioned may be changed or developed.
    两段代码放一起,另一个就无效了。
    <script type="text/javascript">
    $(".list li a").click(function(){
    $(".list li a").removeClass("sel");
    $(this).addClass("sel");
    $(".list li a").css({background:"none"})
    $(".sel").css({background:"#383838"})
    })
    $(".list li a").active(function(){
    $(".list li a").not(".sel").css({background:"none"})
    $(this).css({background:"#383838"})
    })
    </script>

    <script type="text/javascript">
    //获取id
    function $ (id)
    {
    return typeof id === "string" ? document.getElementById(id) : id;
    }
    //获取tagName
    function $$ (elem, oParent)
    {
    return (oParent || document).getElementsByTagName(elem);
    }
    //获取class
    function $$$ (className, oParent)
    {
    var aClass = [];
    var reClass = new RegExp("(//s|^)" + className + "($|//s)");
    var aElem = $$("*", oParent);
    for (var i = 0; i < aElem.length; i++) reClass.test(aElem[i].className) && aClass.push(aElem[i]);
    return aClass
    }
    //初始化对象
    function Roll ()
    {
    this.initialize.apply(this, arguments)
    }
    Roll.prototype =
    {
    initialize: function (obj)
    {
    var _this = this;
    this.obj = $(obj);
    this.oUp = $$$("up", this.obj)[0];
    this.oDown = $$$("down", this.obj)[0];
    this.oList = $$$("list", this.obj)[0];
    this.aItem = this.oList.children;
    this.timer = null;
    this.iNow = 0;
    this.iHeight = this.aItem[0].offsetHeight;
    this.oUp.onclick = function ()
    {
    _this.up()
    };
    this.oDown.onclick = function ()
    {
    _this.down()
    }
    },
    up: function ()
    {
    this.oList.insertBefore(this.aItem[this.aItem.length - 1], this.oList.firstChild);
    this.oList.style.top = -this.iHeight + "px";
    this.doMove(0)
    },
    down: function ()
    {
    this.doMove(-this.iHeight, function ()
    {
    this.oList.appendChild(this.aItem[0]);
    this.oList.style.top = 0;
    })
    },
    doMove: function (iTarget, callBack)
    {
    var _this = this;
    clearInterval(this.timer)
    this.timer = setInterval(function ()
    {
    var iSpeed = (iTarget - _this.oList.offsetTop) / 5;
    iSpeed = iSpeed > 0 ? Math.ceil(iSpeed) : Math.floor(iSpeed);
    _this.oList.offsetTop == iTarget ? (clearInterval(_this.timer), callBack && callBack.apply(_this)) : _this.oList.style.top = iSpeed + _this.oList.offsetTop + "px"
    }, 30)
    }
    };
    window.onload = function ()
    {
    new Roll("side");
    };
    </script>
    7 replies    1970-01-01 08:00:00 +08:00
    lingyired
        1
    lingyired  
       Dec 10, 2013   ❤️ 1
    function $ (id)
    {
    return typeof id === "string" ? document.getElementById(id) : id;
    }

    这里,就把jquery 的$ 给覆盖掉了。让我想起蛋疼的discuz。
    lingyired
        2
    lingyired  
       Dec 10, 2013   ❤️ 1
    解决方法是:
    把function $ (id) 中的$ 替换城getById,包括下面的引用。
    或者,使用 jQuery.noConflict() 让jQuery 释放 $ 的使用权,然后使用jQuery 代替
    airyland
        3
    airyland  
       Dec 10, 2013
    更加规范的是所有用到jQuery的代码都这样写

    (function($){
    //
    })(jQuery);
    jemygraw
        4
    jemygraw  
       Dec 10, 2013
    @airyland 说的对。或者简单一点放在$(document).ready(function(){...});里面。
    zealinux
        5
    zealinux  
       Dec 10, 2013
    在问问题的时候就不能把代码给弄整齐些吗???
    ianva
        6
    ianva  
       Dec 10, 2013
    帖代码用github
    <script src="https://gist.github.com/anonymous/7886958.js"></script>
    alsotang
        7
    alsotang  
       Dec 10, 2013
    明显是

    function $(id)

    这一句把 JQ 废了嘛。
    放进闭包里吧。
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