JavaScript Replace function application and example tutorial

Definitions and usage

Stringobject.replace (regexp/substr,replacement)

The replace () method replaces some characters in a string with some other characters, or replaces a substring that matches a regular expression.

Look at an example

<script type= "text/web Effects" >

var str= "Visit microsoft!"
document.write (Str.replace (/microsoft/, "W3school"))

</script>

Look at one. Replace the space function with replace

Remove the space on the right

*/

String.prototype.rtrim=function ()
{
Returnthis.replace (/(s*$)/g, "");
}

/*

Remove space before and after

*/

String.prototype.trim=function ()
{
Returnthis.replace (/(^s*) | ( s*$)/g, "");
}

Only digits can be entered with the replace limit

<asp Tutorial: TextBox id= "textbox16" runat= "Server" onkeyup= "This.value=this.value.replace" (/d/g, "") "onblur=" Maxtextvalue (this,10) "width=" 165px "></asp:textbox><span style=" Color:gray "> Unit/day </span>// Only numbers can be entered