第一种：Image + canvas文章来源：https://www.toymoban.com/news/detail-509323.html
const getBase64Image = src => {
return new Promise(resolve => {
const img = new Image()
img.crossOrigin = ''
img.src = src
img.onload = function () {
const canvas = document.createElement('canvas')
canvas.width = img.width
canvas.height = img.height
const ctx = canvas.getContext('2d')
ctx?.drawImage(img, 0, 0, img.width, img.height)
const ext = img.src.substring(img.src.lastIndexOf('.') + 1).toLowerCase()
const dataURL = canvas.toDataURL('image/' + ext)
resolve(dataURL)
}
})
}第二种：xhr + FileReader文章来源地址https://www.toymoban.com/news/detail-509323.html
const getBase64Image = src => {
return new Promise(resolve => {
let xhr = new XMLHttpRequest()
xhr.open('get', src, true)
xhr.responseType = 'blob'
xhr.onload = function () {
if (this.status == 200) {
let blob = this.response
let oFileReader = new FileReader()
oFileReader.onloadend = function (e) {
const base64 = e.target.result
resolve(base64)
}
oFileReader.readAsDataURL(blob)
}
}
xhr.send()
})
}到了这里，关于js将图片转base64两种方法的文章就介绍完了。如果您还想了解更多内容，请在右上角搜索TOY模板网以前的文章或继续浏览下面的相关文章，希望大家以后多多支持TOY模板网！
