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Delete first character of a string in Javascript
... of a string using substring:
var s1 = "foobar";
var s2 = s1.substring(1);
alert(s2); // shows "oobar"
To remove all 0's at the start of the string:
var s = "0000test";
while(s.charAt(0) === '0')
{
s = s.substring(1);
}
s...
How can I change or remove HTML5 form validation default error messages?
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you can remove this alert by doing following:
<input type="text" pattern="[a-zA-Z]+"
oninvalid="setCustomValidity(' ')"
/>
just set the custom message to one blank space
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Remove multiple elements from array in Javascript/jQuery
...r, function(n, i) {
return $.inArray(i, removeValFromIndex) ==-1;
});
alert(arr);//arr contains V2, V4
check this fiddle.
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How to convert string into float in JavaScript?
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Have you ever tried to do this? :p
var str = '3.8';ie
alert( +(str) + 0.2 );
+(string) will cast string into float.
Handy!
So in order to solve your problem, you can do something like this:
var floatValue = +(str.replace(/,/,'.'));
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Xcode: failed to get the task for process
...t, seriously, WHY... Why can't Xcode give a half-useful error message, to alert you to this issue ? It's 2016. Is Xcode ever going to grow up, and look like a half-decent environment ?!
– Mike Gledhill
Jul 28 '16 at 13:25
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提升速度：XP注册表与驱动优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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Messenger(消息):在网络上发送和接收信息。如果你关闭了Alerter，你可以安全地把它改为手动启动。
Printer Spooler(打印后台处理程序):如果你没有配置打印机，建议改为手动启动或干脆关闭它。
Error Reporting Service(错误报告):服务和...
Get class name using jQuery
...usefull if you know the classname you are checking...but my comment was to alert you not to use .attr('class')=='CLASSNAME_YOU_ARE_SEARCHING' to check if a dom element has some class instead it's better to use .hasClass
– sandino
Jun 15 '11 at 19:45
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Reordering arrays
...ice(from, 1)[0]);
};
Then just use:
var ar = [1,2,3,4,5];
ar.move(0,3);
alert(ar) // 2,3,4,1,5
Diagram:
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Persist javascript variables across pages? [duplicate]
...en I move to Page B, via clicking a hyperlink in A, and do something like alert(window.someVar) -- I should get a message box displaying 5. Is there a technique to persist someVar as such...?
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How to append output to the end of a text file
...identally type command > file_to_append_to to an existing file, it will alert you that the file exists already. Sample error message: file exists: testFile.txt
Thus, when you use > it will only allow you to create a new file, not overwrite an existing file.
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