How to Use Javascript Injections

This updated guide examines How to Use Javascript Injections and organizes the essential facts, background, and practical takeaways in clear American English.

Sample Injections

Sample Javascript Injections

Method 1

Using JavaScript Injections

1. You must enter the code in the URL address bar of the window. Try these injections:
   • Note - If you use Firefox, you will have to use another way, like cmd-shift-k on a Mac
   • javascript:alert("Hello!");
   • To bring up an alert box saying "Hello!":
2. javascript:alert("Hello"); alert("World");
   • To bring up 2 alert boxes, the one in the front will say "Hello" and once you click OK, the one saying "World" will appear:
3. javascript:alert(document.forms[0].to.value="something")
   • To change the value of form [0] to something:
4. javascript:void(document.bgColor="blue")
   • To change the background color to blue. You can put any other color in the place of blue to change it to a different color:
5. javascript:alert("The actual url is: tt" + location.protocol + "//" + location.hostname + "/" + "nThe address URL is:tt" + location.href + "n" + "nIf the server names do not match, this may be a spoof.");
   • To see the real server name of the site you are looking at. You should use it if you think that you are viewing a spoofed website, or anytime just to make sure:
6. javascript:R=0; x1=.1; y1=.05; x2=.25; y2=.24; x3=1.6; y3=.24; x4=300; y4=200; x5=300; y5=200; DI=document.images; DIL=DI.length; function A(){for(i=0; i-DIL; i++){DIS=DI[ i ].style; DIS.position='absolute'; DIS.left=Math.sin(R*x1+i*x2+x3)*x4+x5; DIS.top=Math.cos(R*y1+i*y2+y3)*y4+y5}R++}setInterval('A()',5); void(0);
   • To make pictures fly around. Make sure to find a site like Google Images so there are more pictures!(If you press the refresh button, it goes really fast, but might only work with macOS):
7. javascript:R=0; x1=.1; y1=.05; x2=.25; y2=.24; x3=1.6; y3=.24; x4=300; y4=200; x5=300; y5=200; DI=document.images; DIL=DI.length; function A(){for(i=0; i-DIL; i++){DIS=DI[ i ].style; DIS.position='absolute'; DIS.left=Math.cos(R*x1+i*x1+x2)*x4+x5; DIS.top=Math.cos(R*y1+i*y2+y3)*y4+y5}R++}setInterval('A()',5); void(0);
   • To spin circle of pictures. It funnels the pictures in a snake-like motion:
8. javascript:document.body.contentEditable='true';document.designMode='on';void 0
   • To move things around on the webpage: