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JS实现改变HTML上文字颜色和内容的方法

不言asal: 2018-06-05 15:31:552492semak imbas

这篇文章主要介绍了JS实现改变HTML上文字颜色和内容的方法,涉及JS数学运算与页面元素动态操作相关技巧,需要的朋友可以参考下

本文实例讲述了JS实现改变HTML上文字颜色和内容的方法。分享给大家供大家参考，具体如下：

1. JavaScript

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
 <HEAD>
 <TITLE> Day 1 </TITLE>
 <META NAME="Generator" CONTENT="EditPlus">
 <META NAME="Author" CONTENT="">
 <META NAME="Keywords" CONTENT="">
 <META NAME="Description" CONTENT="">
 <script>
  // to change the color of an object.
  function changeColor(){
  x=document.getElementById("Id1");
  x.style.color="Red";
  }
  // to change the content of an object.
  function changeContent(){
  y=document.getElementById("Id2");
  y.innerHTML="Hi, you have changed the contents using Java Script successfully!";
  }
  </script>
 </HEAD>
<BODY bgcolor="AntiqueWhite">
  <h1 ><center>Welcome Page</center></h1>
  <p id="Id1">It is test 1.</p>
  <p id="Id2">It is test 2.</p>
  <button type="button" onclick ="changeColor()">
    Change color of test 1
  </button><br/><br/>
  <button type="button" onclick ="changeContent()">
    Change content of test 2
  </button>
 </BODY>
</HTML>

2. Day 1.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
 <HEAD>
 <TITLE> Day 1 </TITLE>
 <META NAME="Generator" CONTENT="EditPlus">
 <META NAME="Author" CONTENT="">
 <META NAME="Keywords" CONTENT="">
 <META NAME="Description" CONTENT="">
 <script>
  // to change the color of an object.
  function changeColor(){
  x=document.getElementById("Id1");
  x.style.color="Red";
  }
  // to change the content of an object.
  function changeContent(){
  y=document.getElementById("Id2");
  y.innerHTML="Hi, you have changed the contents using Java Script successfully!";
  }
  </script>
 </HEAD>
<BODY bgcolor="AntiqueWhite">
  <h1 ><center>Welcome Page</center></h1>
  <p id="Id1">It is test 1.</p>
  <p id="Id2">It is test 2.</p>
  <button type="button" onclick ="changeColor()">
    Change color of test 1
  </button><br/><br/>
  <button type="button" onclick ="changeContent()">
    Change content of test 2
  </button>
 </BODY>
</HTML>

3. 运行效果截图：

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