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How to change the background with javascript
- 青灯夜游Original
- 2021-06-23 13:58:008531browse
Javascript method to change the background: First use the "document.getElementById('id value')" statement to obtain the specified element object; then use "element object.style.background="background color value or image path"" The statement can set the background.
The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.
javascript to change the background
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
#div{
height: 200px;
background: url(img/1.jpg) no-repeat;
}
</style>
<script>
function displayResult(){
document.getElementById('h1').style.background="paleturquoise";
document.getElementById('div').style.background="url(img/2.jpg) no-repeat";
}
</script>
</head>
<body>
<h1 id="h1" style="background: red;">Hello World!</h1>
<div id="div"></div>
<br>
<button type="button" onclick="displayResult()">改变背景</button>
</body>
</html>Rendering:
## The #getElementById() method returns a reference to the first object with the specified ID.
- If there is no element with the specified ID, return null
- If there are multiple elements with the specified ID, return the first one.
- The background property sets all background properties in one declaration.
The syntax for setting the background attribute:
Object.style.background="color image repeat attachment position"
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