jsonview的实现

前端页面展示json，组件封装如下：

先贴一下目录结构：

 

// index.vue

<template>
    <div v-if="visible" :class="['json-view-container',theme,`deep-${currentDeep}`]">
        <div
            :class="['json-view', length ? 'closeable' : '']"
            :style="{fontSize: fontSize + 'px',lineHeight: lineHeight + 'px'}"
        >
            <!--icon-style-square-->
            <span
                v-if="length && iconStyle === 'square'" class="angle"
                @click="toggleClose"
            >
                <svg
                    v-if="innerclosed" :fill="iconColors[0]"
                    width="1em" height="1em"
                    viewBox="0 0 1792 1792"
                    style=" 1em; height: 1em; color: rgb(42, 161, 152); vertical-align: middle;"
                >
                    <path
                        d="M1344 800v64q0 14-9 23t-23 9h-352v352q0 14-9 23t-23 9h-64q-14
                    0-23-9t-9-23v-352h-352q-14 0-23-9t-9-23v-64q0-14 9-23t23-9h352v-352q0-14
                    9-23t23-9h64q14 0 23 9t9 23v352h352q14 0 23 9t9 23zm128
                    448v-832q0-66-47-113t-113-47h-832q-66 0-113 47t-47 113v832q0 66 47
                    113t113 47h832q66 0 113-47t47-113zm128-832v832q0 119-84.5 203.5t-203.5
                    84.5h-832q-119 0-203.5-84.5t-84.5-203.5v-832q0-119 84.5-203.5t203.5-84.5h832q119
                    0 203.5 84.5t84.5 203.5z"
                    />
                </svg>
                <svg
                    v-if="!innerclosed" :fill="iconColors[1]"
                    width="1em" height="1em"
                    viewBox="0 0 1792 1792"
                    style=" 1em; height: 1em; color: rgb(88, 110, 117); vertical-align: middle;"
                >
                    <path
                        d="M1344 800v64q0 14-9 23t-23 9h-832q-14 0-23-9t-9-23v-64q0-14 9-23t23-9h832q14
                    0 23 9t9 23zm128 448v-832q0-66-47-113t-113-47h-832q-66 0-113 47t-47 113v832q0 66 47
                     113t113 47h832q66 0 113-47t47-113zm128-832v832q0 119-84.5 203.5t-203.5 84.5h-832q-119
                     0-203.5-84.5t-84.5-203.5v-832q0-119 84.5-203.5t203.5-84.5h832q119 0 203.5 84.5t84.5 203.5z"
                    />
                </svg>
            </span>
            <!--icon-style-circle-->
            <span
                v-if="length && iconStyle === 'circle'" class="angle"
                @click="toggleClose"
            >
                <svg
                    v-if="!innerclosed" viewBox="0 0 24 24"
                    :fill="iconColors[0]" preserveAspectRatio="xMidYMid meet"
                    style="  1em; height: 1em; color: rgb(1, 160, 228); vertical-align: middle;"
                >
                    <path
                        d="M12,20C7.59,20 4,16.41 4,12C4,7.59 7.59,4 12,4C16.41,4 20,7.59 20,12C20,16.41 16.41,
                    20 12,20M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10,10 0 0,0 12,2M7,13H17V11H7"
                    />
                </svg>
                <svg
                    v-if="innerclosed" viewBox="0 0 24 24"
                    :fill="iconColors[1]" preserveAspectRatio="xMidYMid meet"
                    style="  1em; height: 1em; color: rgb(161, 106, 148); vertical-align: middle;"
                >
                    <path
                        d="M12,20C7.59,20 4,16.41 4,12C4,7.59 7.59,4 12,4C16.41,4 20,7.59 20,12C20,
                        16.41 16.41,20 12,20M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,
                        12A10,10 0 0,0 12,2M13,7H11V11H7V13H11V17H13V13H17V11H13V7Z"
                    />
                </svg>
            </span>
            <!--icon-style-triangle-->
            <span
                v-if="length && iconStyle === 'triangle'" class="angle"
                @click="toggleClose"
            >
                <svg
                    v-if="!innerclosed"
                    viewBox="0 0 15 15"
                    :fill="iconColors[0]"
                    style="  1em; height: 1em; padding-left: 2px; color: #3c4047; vertical-align: top;"
                >
                    <path d="M0 5l6 6 6-6z"/>
                </svg>
                <svg
                    v-if="innerclosed" viewBox="0 0 15 15"
                    :fill="iconColors[1]"
                    style=" 1em; height: 1em; padding-left: 2px; color: #3c4047; vertical-align: top;"
                >
                    <path d="M0 14l6-6-6-6z"/>
                </svg>
            </span>
            <div class="content-wrap">
                <p :class="['first-line',length > 0 ? 'pointer' : '']" @click="toggleClose">
                    <span v-if="jsonKey" class="json-key">"{{ jsonKey }}": </span>
                    <span v-if="length">{{ prefix }}{{ innerclosed ? ('...' + subfix) : '' }}
                        <span class="json-note">{{ innerclosed ? (length + ' items') : '' }}</span>
                    </span>
                    <span v-if="!length">{{ `${isArray ? '[]' : '{}'}${isLast ? '' : ','}` }}</span>
                </p>
                <div v-if="!innerclosed && length" class="json-body">
                    <template v-for="(item, index) in items">
                        <json-view
                            v-if="item.isJSON"
                            :key="index"
                            :closed="isClose()"
                            :data="item.value"
                            :json-key="item.key"
                            :current-deep="templateDeep + 1"
                            :deep="deep"
                            :icon-style="iconStyle"
                            :theme="theme"
                            :font-size="fontSize"
                            :line-height="lineHeight"
                            :icon-color="iconColors"
                            :is-last="index === items.length - 1"
                            :has-siblings="item.hasSiblings"
                        />
                        <p
                            v-else :key="index"
                            class="json-item"
                        >
                            <span class="json-key">
                                {{ (isArray ? '' : '"' + item.key + '":') }}
                            </span>
                            <span :class="['json-value',getDataType(item.value)]">
                                {{
                                    `${
                                        getDataType(item.value) === 'string' ? '"' : ''
                                    }${
                                        formatValue(item.value)}${getDataType(item.value) === 'string' ? '"' : ''
                                    }
                                    ${index === items.length - 1 ? '' : ','}`
                                }}
                            </span>
                        </p>
                    </template>
                    <span v-if="!innerclosed" class="base-line"></span>
                </div>
                <p v-if="!innerclosed " class="last-line">
                    <span>{{ subfix }}</span>
                </p>
            </div>
        </div>

    </div>
</template>
<script src="./json-view.js"></script>
<style lang="less" scoped>
@import "./style/index";
</style>

// json-view.js

export default {
    name: 'json-view',
    props: {
        data: { // 传入的json数据
            type: [Object, Array],
            required: true
        },
        jsonKey: { // json的key值，用于第二层及二层以上的组件的key值
            type: String,
            default: ''
        },
        closed: { // 是否折叠
            type: Boolean,
            default: false
        },
        isLast: { // 是否是最后一行
            type: Boolean,
            default: true
        },
        fontSize: { // 字体大小
            type: Number,
            default: 14
        },
        lineHeight: { // 行高
            type: Number,
            default: 24
        },
        deep: { // 展开深度
            type: Number,
            default: 3
        },
        currentDeep: { // 当前为递归的第几层
            type: Number,
            default: 1
        },
        iconStyle: { // 折叠icon样式
            type: String,
            default: 'square'
        },
        iconColor: { // icon颜色
            type: Array,
            default() {
                return [];
            }
        },
        theme: { // 主题
            type: String,
            default: ''
        },
        hasSiblings: { // 是否有兄弟节点
            type: Boolean,
            default: true
        }
    },
    data() {
        return {
            innerclosed: this.closed,
            templateDeep: this.currentDeep,
            visible: false
        };
    },
    computed: {
        isArray() {
            return this.getDataType(this.data) === 'array';
        },
        length() {
            return this.isArray ? this.data.length : Object.keys(this.data).length;
        },
        subfix() {
            const data = this.data;
            if (this.isEmptyArrayOrObject(data)) { // 如果是空数组或空对象
                return '';
            } else {
                return (this.isArray ? ']' : '}') + (this.isLast ? '' : ',');
            }
        },
        prefix() {
            return this.isArray ? '[' : '{';
        },
        items() {
            const json = this.data;

            if (this.isArray) {
                return json.map(item => {
                    const isJSON = this.isObjectOrArray(item);
                    return {
                        value: item,
                        isJSON,
                        key: ''
                    };
                });
            }
            return Object.keys(json).map(key => {
                const item = json[key];
                const isJSON = this.isObjectOrArray(item);
                return {
                    value: item,
                    isJSON,
                    key
                };
            });
        },
        iconColors() {
            const {theme, iconColor} = this;
            if (iconColor.length === 2) {
                return iconColor;
            } else if (theme === 'one-dark') {
                return ['#747983', '#747983'];
            } else if (theme === 'vs-code') {
                return ['#c6c6c6', '#c6c6c6'];
            } else {
                return ['#747983', '#747983'];
            }
        }
    },
    mounted() {
        setTimeout(() => {
            this.visible = true;
        }, 0);
    },
    methods: {
        formatValue(data) {
            if (data && data.isBigNumber) {
                return data.toString(10);
            }
            return data;
        },
        getDataType(data) {
            return data && data.isBigNumber
                ? 'number'
                : Object.prototype.toString.call(data).slice(8, -1).toLowerCase();
        },
        isObjectOrArray(source) {
            return ['array', 'object'].includes(this.getDataType(source));
        },
        toggleClose() {
            if (this.length === 0) {
                return;
            }
            if (this.innerclosed) {
                this.innerclosed = false;
            } else {
                this.innerclosed = true;
            }
        },
        isClose() {
            return this.templateDeep + 1 > this.deep;
        },
        isEmptyArrayOrObject(data) { // 空数组或者空对象
            return [
                {},
                []
            ].map(item => JSON.stringify(item)).includes(JSON.stringify(data));
        }
    },
    watch: {
        closed() {
            this.innerclosed = this.closed;
        }
    }
};

style下的文件：

// index.less

// default
@import "./on-dark";
@import "./vs-code";

.json-view-container {
    background-color: #fff;

    &.deep-1 {
        // overflow: auto;
        padding-right: 10px;
    }

    .json-view {
        position: relative;
        box-sizing: border-box;
        display: block;
        width: 100%;
        height: 100%;
        padding-left: 2rem;
        font-family: Consolas !important;
        white-space: nowrap;
        cursor: default;

        .json-note {
            font-size: 12px;
            font-style: italic;
            color: #909399;
        }

        .json-key {
            color: #8c6325;
        }

        .json-value {
            display: inline-block;
            color: #57b73b;
            word-break: break-all;
            white-space: normal;

            &.number {
                color: #2d8cf0;
            }

            &.string {
                color: #57b73b;
            }

            &.boolean {
                color: #eb3324;
            }

            &.null {
                color: #eb3324;
            }
        }

        .json-item {
            display: flex;
            padding-left: 2rem;
            margin: 0;
        }

        .first-line {
            padding: 0;
            margin: 0;

            &.pointer {
                cursor: pointer !important;
            }
        }

        .json-body {
            position: relative;
            padding: 0;
            margin: 0;

            .base-line {
                position: absolute;
                top: 0;
                left: 2px;
                height: 100%;
                border-left: 1px dashed #bbb;
            }
        }

        .last-line {
            padding: 0;
            margin: 0;
        }

        .angle {
            position: absolute;

            /* left: ~"calc(2rem - 18px)"; */
            left: 12px;
            display: block;
            // eslint-disable-next-line
            //float: left; // eslint-disable-line
            width: 20px;
            text-align: center;
            cursor: pointer;
        }
    }
}

// on-dark.less

// dark
.json-view-container {
    &.one-dark {
        background-color: #292c33;

        .json-view {
            font-family: Menlo, Consolas, "Courier New", Courier, FreeMono, monospace !important;

            .json-note {
                font-size: 12px;
                font-style: italic;
                color: #909399;
            }

            .json-key {
                color: #d27277;
            }

            .json-value {
                color: #c6937c;

                &.number {
                    color: #bacdab;
                }

                &.string {
                    color: #c6937c;
                }

                &.boolean {
                    color: #659bd1;
                }

                &.null {
                    color: #659bd1;
                }
            }

            .first-line {
                color: #acb2be;
            }

            .json-body {
                .base-line {
                    border-left: 1px solid #3c4047;
                }
            }

            .last-line {
                color: #acb2be;
            }

            .json-item {
                color: #acb2be;
            }
        }
    }
}

// vs.code.less

// vs-code
.json-view-container {
    &.vs-code {
        background-color: #1e1e1e;

        .json-view {
            font-family: Menlo, Consolas, "Courier New", Courier, FreeMono, monospace !important;

            .json-note {
                font-size: 12px;
                font-style: italic;
                color: #909399;
            }

            .json-key {
                color: #a9dbfb;
            }

            .json-value {
                color: #c6937c;
            }

            .first-line {
                color: #d4d4d4;
            }

            .json-body {
                .base-line {
                    border-left: 1px solid #404040;
                }
            }

            .last-line {
                color: #d4d4d4;
            }

            .json-item {
                color: #d4d4d4;
            }
        }
    }
}

使用示例：

<json-view
                :data="json"
                :theme="theme"
                :deep="deep"
                :icon-style="iconStyle"
                :font-size="fontSize"
                :line-height="lineHeight"
                :closed="closed"
                :icon-color="iconColor"
            />

效果展示：

参数：