为什么h5环境中tabbar图标不显示

在h5环境中tabbar的图片不显示.但APP端是正常的.

    "tabBar": {  
        "color": "#1D2029",  
        "borderStyle": "",  
        "selectedColor": "#F20041",  
        "backgroundColor": "#F8F8F8",  
        "iconfontSrc": "static/img/iconfont.ttf",  
        "list": [  
            {  
                "text": "推荐",  
                "pagePath": "pages/index/index",  
                "iconPath": "static/img/home.png",  
                "selectedIconPath": "static/img/home_fill.png"  
            },  
            {  
                "text": "诊股",  
                "pagePath": "pages/diagnosis/diagnosis",  
                "iconPath": "static/img/integral.png",  
                "selectedIconPath": "static/img/integral_fill.png"  
            },  
            {  
                "text": "买卖",  
                "pagePath": "pages/business/business",  
                "iconPath": "static/img/service.png",  
                "selectedIconPath": "static/img/service_fill.png"  
            },  
            {  
                "text": "我的",  
                "pagePath": "pages/member/member",  
                "iconPath": "static/img/people.png",  
                "selectedIconPath": "static/img/people_fill.png"  

            }  
        ]  
    },