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Content changes dynamically using javascript but effects does not remain permanant

  • 2 个回答
  • 1 人有此问题
  • 7 次查看
  • 最后回复者为 mahesh_chavan

mahesh_chavan
mahesh_chavan
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When I use javascript to change font/color/size or inner html, it works temporarily only. Changes does not remain permanent. e.g.

<title>Showing Charset</title> <style type="text/css"> .head_class {color:red;font-size:60;font-family:impact;} </style>

<script type="text/JavaScript"> function chngFont() { var el2 = document.getElementById('myfont'); var sfont = el2.value; document.getElementById('head').className = 'head_class'; document.getElementById('head').innerHTML = sfont; // alert(document.seefont.fonttosee.value); } </p><p></script>

Charset

<form name="seefont"> <input type="text" id="myfont" name="fonttosee" size="20" value="arial"> <button onclick="chngFont()">Change font</button> </form>


When I click the button class head_class is applied to heading id "head" and even the text is change to font name entered but just momentarily. If I use alert in the function, the changes remain only till alert is on the screen. The same code works in IE forever ( The changes remain permanent. What are the settings in firefox to make the changes using javascript permanent ?

When I use javascript to change font/color/size or inner html, it works temporarily only. Changes does not remain permanent. e.g. <HTML> <BODY BGCOLOR#FFFF00> <HEAD><TITLE>Showing Charset</TITLE> <STYLE type="text/css"> .head_class {color:red;font-size:60;font-family:impact;} </STYLE> <script type="text/JavaScript"> function chngFont() { var el2 = document.getElementById('myfont'); var sfont = el2.value; document.getElementById('head').className = 'head_class'; document.getElementById('head').innerHTML = sfont; // alert(document.seefont.fonttosee.value); } </script> </head> <body bgcolor=#ffff00> <h1 align=center id="head">Charset</h1> <form name=seefont > <input type="text" id="myfont" name="fonttosee" size=20 value="arial"> <button onclick="chngFont()">Change font</button> </form> </BODY></HTML> When I click the button class head_class is applied to heading id "head" and even the text is change to font name entered but just momentarily. If I use alert in the function, the changes remain only till alert is on the screen. The same code works in IE forever ( The changes remain permanent. What are the settings in firefox to make the changes using javascript permanent ?

由mahesh_chavan于修改

被采纳的解决方案

Your <button> might be submitting the form and causing the page to refresh. Try this to prevent form submission: 

<button onclick="chngFont(); return false;">
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所有回复 (2)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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选择的解决方案

Your <button> might be submitting the form and causing the page to refresh. Try this to prevent form submission: 

<button onclick="chngFont(); return false;">
mahesh_chavan
mahesh_chavan 提问者
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Thank you so much jscher2000 ! Firefox reloads the page automatically and that was the problem. Now the changes remains permanent

由mahesh_chavan于修改