JavaScript uses random numbers and timers to complete a few useful text scrolling effects of small manipulation text, the print effect of text and the color of text flashing

Source: Internet
Author: User

Scrolling of text

<body>    <textarea id= "textarea" ></textarea>    <script>        str= "Scrolling effect of text" ;         function Roll () {            str=str.substr (1,str.length) +str.substring (0,1);            document.getElementById ("textarea"). Style.fontsize= "20px";            document.getElementById ("textarea"). innertext=str;             }        SetInterval (roll,N);     </script></body>

Printing of text

<body>    <textarea id= "textarea" ></textarea>    <script>        var str= " The print effect of the text ";         var index=0;         function type () {              if(index = = str.length+1)                  {= 0;              }            document.getElementById ("textarea"). Style.fontsize= "15px";            document.getElementById ("textarea"). InnerText = str.substring (0, index++);        }         );     </script></body>

The color of the text flashes

<body> <span id= "S1" > Text </span> <span id= "s2" > Word </span> <span id= "S3" > </span    > <span id= "s4" > Yan </span> <span id= "S5" > Colors </span> <span id= "S6" > Flash </span> <span id= "S7" > </span> <script>Str= "Color of text flashes"; functioncolor () {R=math.floor (Math.random () *256); G=math.floor (Math.random () *256); b=math.floor (Math.random () *256); return"RGB (" +r+ "," +g+ "," +b+ ")"        }        functionWord () {document.getElementById ("S1"). style.color=color (); document.getElementById ("S2"). style.color=color (); document.getElementById ("S3"). style.color=color (); document.getElementById ("S4"). style.color=color (); document.getElementById ("S5"). style.color=color (); document.getElementById ("S6"). style.color=color (); document.getElementById ("S7"). style.color=color (); } setinterval (Word,500); </script></body>

JavaScript uses random numbers and timers to complete a few useful text scrolling effects of small manipulation text, the print effect of text and the color of text flashing

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