微信小程序实现图片选择并预览功能

    </view><view class="contant-pic"> <view class="pics-list" wx:for="{{pics}}" wx:key=""> <image src="{{item}}" class="uploadImg"></image><image src="../../images/delete.png-600" class="uploadImg-error" data-img="{{item}}" bindtap='deleteImg'></image></view><image src="../../images/uploadImg.png-600" class="uploadImg {{isShow?'true':'hideTrue'}}" bindtap='uploadImage'></image></view></view><view class="phone"> <input name="inputPhone" bindinput="inputPhone" placeholder="您的手机号或者邮箱(选填)"/></view><view class="phone"> <input name="inputName" bindinput="inputName" placeholder="您的称呼(选填)"/></view><view class="bottom" bindtap='submitAdvice'> 保存</view></view></pre></div><p>wxss页面：</p><div class="jb51code"><pre class="brush:css;"> page{ background-color: #efefef; } .wrap{ width:90%; margin-left:5%; margin-top:10px; font-size:15px; } .contant_wrap{ background-color: #fff; } .contant{ width: 94%; margin: 0 auto } textarea{ min-height:300rpx; max-height: 300rpx; padding: 10rpx 0; width: 100%; } .contant-pic{ width: 94%; margin: 0 auto; height:80px; } .pics-list{ width:73px; height:73px; float:left; margin-right:6px; } .uploadImg{ width:70px; height:70px; } .uploadImg-error{ height:25px; width:25px; position:relative; top:-80px; left:55px; } .hideTrue { display: none } .true { display: block } input{ margin-top: 30rpx; height: 80rpx; padding-left: 20rpx; background-color: #fff; } .placeholder{ color: #999999; font-size: 12pt; } .bottom{ width:100%; height:40px; background-color:#e64340; position:fixed; bottom:0; color:#ffff; text-align: center; line-height: 40px; } </pre></div><p>js中：</p><div class="jb51code"><pre class="brush:js;"> // pages/advice/advice.js Page({ /** 页面的初始数据*/ data: { content:'', phone:'', name:'', advice:'', pics:[], isShow: true }, /**获取textarea值：评论内容 */ bindTextAreaBlur:function(e){ this.setData({ advice:e.detail.value }) }, /**获取手机或邮箱*/ inputPhone: function (e) { this.setData({ phone: e.detail.value }) }, /**获取称呼 */ inputName: function (e) { this.setData({ name: e.detail.value }) }, /**上传图片 */ uploadImage:function(){ let that=this; let pics = that.data.pics; wx.chooseImage({ count:3 - pics.length, sizeType: ['original', 'compressed'], sourceType: ['album', 'camera'], success: function(res) { let imgSrc = res.tempFilePaths; pics.push(imgSrc); if (pics.length >= 3){ that.setData({ isShow: false }) } that.setData({ pics: pics }) }, }) }, /**删除图片 */ deleteImg:function(e){ let that=this; let deleteImg=e.currentTarget.dataset.img; let pics = that.data.pics; let newPics=[]; for (let i = 0;i<pics.length; i++){ //判断字符串是否相等 if (pics[i]["0"] !== deleteImg["0"]){ newPics.push(pics[i]) } } that.setData({ pics: newPics, isShow: true }) }, /**提交 */ submitAdvice:function(){ let that=this; let advice = that.data.advice let name=this.data.name let phone=this.data.phone let pics=this.data.pics //保存操作 } }) </pre></div><p></p></div><p>以上就是微信小程序实现图片选择并预览功能的详细内容，更多请关注0133技术站其它相关文章！</p></article><div class="post-actions"><a href="javascript:;" etap="like" class="post-like action action-like" data-pid="0"><i
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