split-table.js

function splitTable(maxHeight) {
    var selector = null
    var brief201 = document.querySelector('.print-padding.brief201')
    if (brief201) {
        selector = '#brief201section10'
    }
    if (!selector) {
        return
    }
    var table = document.querySelector(selector)
    var header = table.querySelectorAll('thead')
    var splitIndices = [0]
    var currHeight = 0
    var rows = table.querySelector('tbody').children
    var wrapper = document.createElement('div')

    wrapper.id = '_split_table_wrapper'

    rows = [].slice.call(rows)
    if (!header.length) {
        return
    }
    maxHeight -= header[0].offsetHeight

    for (var i = 0, len = rows.length; i < len; i++) {
        currHeight += rows[i].offsetHeight
        if (currHeight > maxHeight) {
            splitIndices.push(i)
            currHeight = rows[i].offsetHeight
        }
    }
    splitIndices.push(undefined)

    table.parentNode.replaceChild(wrapper, table)

    while (table.firstChild) {
        table.removeChild(table.firstChild)
    }

    for (var j = 0; j < splitIndices.length - 1; j++) {
        var newHeader = header[0].cloneNode(true)
        var newTable = table.cloneNode(true)
        newTable.appendChild(newHeader)

        newTable.appendChild(document.createElement('tbody'))

        var rowSet = rows.slice(splitIndices[j], splitIndices[j + 1])

        for (var k = 0; k < rowSet.length - 1; k++) {
            newTable.querySelector('tbody').appendChild(rowSet[k])
        }

        wrapper.appendChild(newTable)

        if (splitIndices[j + 1] !== undefined) {
            var pageBreak = document.createElement('div')
            pageBreak.style.cssText = 'page-break-after: always; margin:0; padding:0; border: none;'
            wrapper.appendChild(pageBreak)
        }
    }
}