shenkwen questions

• Why is document.documentElement.clientWidth 980px on mobile phone
• Is it good practice to use localstorage to store user's email address for another page under the same domain?
• How to prevent table-cell from expanding
• Animation: Making an image gradiently appear from side to side (in opacity)(so called "soft-wipe" effect)
• Google Sheet: How to use arrayformula to copy data from one sheet to another?
• how to catch a "Maximum call stack size exceeded" error?
• How to replace ideographic space in PHP string?
• How can we apply pseudo selector to a jQuery DOM variable?
• how to evaluate   in a string? [duplicate]
• "unknown variable 'max_connections=75'" when trying to start mysql

shenkwen answers