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PObackbone bind multi event to one button after i new View multi times
 

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    <pre><code>var UserView = Backbone.View.extend({ initialize: function(){ MData.blankHeader.data.topBar.title = '&lt;h1 id="titleLogo"&gt;' + this.options.userName + '&lt;/h1&gt;'; MData.blankHeader.data.topBar.btn1 = ''; MData.blankHeader.data.topBar.btn2 = '&lt;a href="#" id="sendDm" class="cu-round-btn"&gt;发私信&lt;/a&gt;'; $('header').html(Mustache.to_html($('#headerTpl').html(), MData.blankHeader)).append('&lt;div class="topbar-shadow"&gt;&lt;/div&gt;'); $('footer').html(Mustache.to_html($('#footerTpl').html(), MData.eventlistFooter)).attr('id','').find('.selected').removeClass('selected').end().find('.footer-item:eq(3)').addClass('selected'); $('#content').css({"top": $('header').height() + 'px'}); setTimeout(function(){ scrollinit(); },0); onScrollEnd = true;//?? this.render(); }, events:{ "click #sendDm" : "sendDm" }, el: $('body'), sendDm: function(e){ alert('send dm'); e.preventDefault(); }, render: function(){ var html = ""; html += Mustache.to_html($("#userTpl").html(), this.options.userData); $('#pullDown').css("display","none"); $('#ajaxEvent').html(html); console.log(this.options.userId); if(this.options.userName != "me"){ $('#dm').remove(); } calTime(); function calTime(){ _.each($('.user-timeStamp'), function(date){ $(date).html(humaneDate(date.innerHTML)); }); } setInterval(calTime,60000) return this; } }); //code in Router var newUser = new UserCol();//new a Collection newUser.fetch({ data: param, success: function(model,data){ new UserView({userData: data, userId: param}) } }) </code></pre> <p>So when I view this page multi times(change the param in the address bar),the backbone will new the UserView multi times,and the event bind to to button will fire multi time, How Can I make the button just fire one time.</p>
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