zac1987 questions

• setTimeout("this.disabled=false",3000); is not working
• php is finish loaded then only start load javascript. Is it true? [duplicate]
• Why don't use mysql ORDER BY RAND()?
• javascript detect user is viewing the page
• Raphael SVG move object along straight horizontal line
• Should every table have a primary key?
• Any benefit of uses CHAR over VARCHAR?
• How to call out javascript function which is assigned to a variable?
• How to fix the Overhead and Effective problem on InnoDB table?
• I set a MySQL column to "NOT NULL" but still I can insert an empty value

zac1987 answers