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- tableMultDom()
- function tableMultDom() {
- const body = document.querySelector('body')
- let table = document.createElement("table")
- table.style.cursor = 'pointer'
- table.setAttribute('border', '1')
- table.setAttribute('frame', 'void')
- body.insertBefore(table, body.childNodes[0])
- for (let rowIndex = 1; rowIndex < 10; rowIndex++) {
- let tr = document.createElement("tr")
- if (rowIndex % 2 === 0) {
- tr.style.backgroundColor = '#CFCFCF'
- }
- table.appendChild(tr)
- for (let colIndex = 1; colIndex < 10; colIndex++) {
- let td = document.createElement("td")
- td.setAttribute('align', 'center')
- td.setAttribute('width', '40px')
- td.setAttribute('height', '40px')
- tr.appendChild(td)
- td.innerText = `${rowIndex*colIndex}`
- }
- }
- }
- // tableMultDomHighlight()
- function tableMultDomHighlight() {
- const cells = document.querySelectorAll('td')
- for (const cell of cells) {
- let currColor = null
- cell.onmouseover = function() {
- currColor = this.style.backgroundColor
- this.style.backgroundColor = 'red'
- }
- cell.onmouseout = function() {
- this.style.backgroundColor = currColor
- }
- }
- }
- tableMultDomHighlightRowCol()
- function tableMultDomHighlightRowCol() {
- const cells = Array.from(document.querySelectorAll('td'))
- for (const cell of cells) {
- let currColor = []
- let currCells = []
- cell.onmouseover = function() {
- let cellIndex1 = this.cellIndex
- let rowIndex1 = this.parentElement.rowIndex
- currCells = cells.filter(item => item.cellIndex === cellIndex1 || item.parentElement.rowIndex === rowIndex1)
- for (const el of currCells) {
- currColor.push(el.style.backgroundColor)
- el.style.backgroundColor = 'red'
- }
- }
- cell.onmouseout = function() {
- for (const el of currCells) {
- let color = currColor.shift()
- el.style.backgroundColor = color
- }
- }
- }
- }
-
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