Introduction to the method of generating html tables based on json in js (code)

This article brings you an introduction to the method (code) of generating html tables based on json in js. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Previously, the company had a requirement: to generate html through js. And most of them generate tables. If you directly splice strings, the reusability of the code is too low, so I wrote a general json to html table tool.

Code

htmlKit = {
    _tags: [], html: [], 
    _createAttrs: function (attrs) {
        var attrStr = [];
        for (var key in attrs) {
            if (!attrs.hasOwnProperty(key)) continue;
            attrStr.push(key + "=" + attrs[key] + "")
        }
        return attrStr.join(" ")
    }, 
    _createTag: function (tag, attrs, isStart) {
        if (isStart) {
            return "<" + tag + " " + this._createAttrs(attrs) + ">"
        } else {
            return "</" + tag + ">"
        }
    }, 
    start: function (tag, attrs) {
        this._tags.push(tag);
        this.html.push(this._createTag(tag, attrs, true))
    }, 
    end: function () {
        this.html.push(this._createTag(this._tags.pop(), null, false))
    }, 
    tag: function (tag, attr, text) {
        this.html.push(this._createTag(tag, attr, true) + text + this._createTag(tag, null, false))
    }, 
    create: function () {
        return this.html.join("")
    }
};

function json2Html(data) {
    var hk = htmlKit;
    hk.start("table", {"cellpadding": "10", "border": "1"});
    hk.start("thead");
    hk.start("tr");
    data["heads"].forEach(function (head) {
        hk.tag("th", {"bgcolor": "AntiqueWhite"}, head)
    });
    hk.end();
    hk.end();
    hk.start("tbody");
    data["data"].forEach(function (dataList, i) {
        dataList.forEach(function (_data) {
            hk.start("tr");
            data["dataKeys"][i].forEach(function (key) {
                var rowsAndCol = key.split(":");
                if (rowsAndCol.length === 1) {
                    hk.tag("td", null, _data[rowsAndCol[0]])
                } else if (rowsAndCol.length === 3) {
                    hk.tag("td", {"rowspan": rowsAndCol[0], "colspan": rowsAndCol[1]}, _data[rowsAndCol[2]])
                }
            });
            hk.end()
        })
    });
    hk.end();
    hk.end();
    return hk.create()
}

Instructions

HtmlKit

htmlKit is a tool for creating html tags

Function

##start (tag, attrs)Create an unclosed tag headertag (tag, attr, text)Create a closed tag

Function name

Function

Example

start("table", {"cellpadding": "10", "border": " 1"}), outputend ()Create the tag end of the previous start functionThe above executes start("table"), then executes end(), and outputs

tag("th", {"bgcolor": "AntiqueWhite"}, "hello" ), output

hello

##json2Html

json to Html

Example:

var data = [
    {
        "chinese": 80,
        "mathematics": 89,
        "english": 90
    }
];

var total = 0;
data.forEach(function (value) {
    for (key in value) {
        total += value[key];
    }
});

var htmlMetadata = {
    "heads": ["语文", "数学", "英语"],
    "dataKeys": [["chinese", "mathematics", "english"], ["text","1:2:total"]], // rowspan:colspan:value
    "data": [data, [{"text": "合计","total": total}]]
};

var html = json2Html(htmlMetadata);

console.info(html);

Output result (the result is formatted for better viewing):

<table cellpadding=10 border=1>
    <thead>
    <tr>
        <th bgcolor=AntiqueWhite>语文</th>
        <th bgcolor=AntiqueWhite>数学</th>
        <th bgcolor=AntiqueWhite>英语</th>
    </tr>
    </thead>
    <tbody>
    <tr>
        <td>80</td>
        <td>89</td>
        <td>90</td>
    </tr>
    <tr>
        <td>合计</td>
        <td rowspan=1 colspan=2>259</td>
    </tr>
    </tbody>
</table>

Effect:

Chinese##8089 90Total259##

Mathematics	English

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