Alt attribute in img tag html error

when i put value in alt attribute in img tag it doesn't app开发者_StackOverflow社区ear over the image.I am using IE8. thanks.

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Use title. alt is meant to be shown when the image cannot be downloaded (also used by screen readers).

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That's how it's supposed to work. If you are asking "how do I make a tooltip?" then the answer is to use the title attribute.

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it doesn't. The alt text is displayed only if the image can't be loaded for some reason or another (e.g. wrong file path, corrupted, etc.)

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The alt attribute is an an alternative if for some reason the user is unable to view the image. Some browsers have chosen to display the alt tag in a similar way to how the title attribute is used. To test it, change the src of the image to be incorrect and you should see the alt text.

See W3Schools - ALT Attribute for more details