vue项目中添加水印效果

vue

基于vue的架构中,在网页中添加水印效果,具体实现 代码如下:

新建js文件:例如warterMark.js

 1 \'use strict\'

2

3 let watermark = {}

4

5 let setWatermark = (str) => {

6 let id = \'1.23452384164.123412415\'

7

8 if (document.getElementById(id) !== null) {

9 document.body.removeChild(document.getElementById(id))

10 }

11

12 let can = document.createElement(\'canvas\')

13 can.width = 150

14 can.height = 120

15

16 let cans = can.getContext(\'2d\')

17 cans.rotate(-20 * Math.PI / 180)

18 cans.font = \'20px Vedana\'

19 cans.fillStyle = \'rgba(200, 200, 200, 0.20)\'

20 cans.textAlign = \'left\'

21 cans.textBaseline = \'Middle\'

22 cans.fillText(str, can.width / 3, can.height / 2)

23

24 let div = document.createElement(\'div\')

25 div.id = id

26 div.style.pointerEvents = \'none\'

27 div.style.top = \'70px\'

28 div.style.left = \'0px\'

29 div.style.position = \'fixed\'

30 div.style.zIndex = \'100000\'

31 div.style.width = document.documentElement.clientWidth - 100 + \'px\'

32 div.style.height = document.documentElement.clientHeight - 100 + \'px\'

33 div.style.background = \'url(\' + can.toDataURL(\'image/png\') + \') left top repeat\'

34 document.body.appendChild(div)

35 return id

36 }

37

38 // 该方法只允许调用一次

39 watermark.set = (str) => {

40 let id = setWatermark(str)

41 setInterval(() => {

42 if (document.getElementById(id) === null) {

43 id = setWatermark(str)

44 }

45 }, 500)

46 window.onresize = () => {

47 setWatermark(str)

48 }

49 }

50

51 export default watermark

使用方式:

在App.vue文件中 引入该js文件:

import warterMark from \'./warterMark\'

接下来再App.vue中的mounted方法中调用,代码如下所示:

<script>

import Watermark from \'../static/js/watermark\'

export default {

name: \'App\',

mounted: function () {

Watermark.set(\'要添加的水印内容\')

}

}

</script>

转至:https://blog.csdn.net/qq_32917123/article/details/87253716

以上是 vue项目中添加水印效果 的全部内容, 来源链接: utcz.com/z/374592.html

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